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Rizfa, Mila Safitri, Ervia Yudiati, and Diah Permata Wijayanti. "Improving The Antioxidant Activity of Sodium Alginate from Sargassum sp. by Thermal Heating and Chemical Methods." Jurnal Kelautan Tropis 23, no. 3 (November 14, 2020): 284–90. http://dx.doi.org/10.14710/jkt.v23i3.8946.
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The relationship between molecular structure and bioactivity was evaluated for sodium alginates obtained under different degradation treatment (raw alginates, heat-treated, and chemical-treated) from Sargassum sp. This study was conducted to identify the antioxidant activities of the degraded sodium alginate from Sargassum sp. compared to raw extract. Raw alginate as the control treatment was dried overnight at 60 °C, while heat-treated was heated raw alginate at 140oC in a laboratory oven (4.5 hours). Two chemical-treated were applied. Raw alginate added hydrogen peroxide and raw alginat with hydrogen peroxide plus ascorbic acid. This treatments were replicated three times. All the parameters were evaluated spectrophotometrically. The spectroscopy results from the degradation methods showed a new absorbance spectra pattern. The FT-IR spectrum revealed that treatment affects the structure of the alginates. Heat treated and chemical treated sodium alginates showed non significantly different on DPPH radical scavenging activity. Meanwhile, the combination of alginate and hydrogen peroxide treatment was at the lowest scavenging ability. Therefore, alginate oligosaccharides (AOS) produced by heating or adding chemical reagents could be considered as a stronger antioxidant than raw alginate, which may be applied in the industry and biomedical
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Sumantri, Dedi, and Prima Suci Waldiatma. "Perbedaan stabilitas dimensi cetakan alginat yang disemprot dan direndam dengan natrium hipoklorit dan ekstrak buah mengkudu: studi eksperimental." Padjadjaran Journal of Dental Researchers and Students 7, no. 3 (November 2, 2023): 300. http://dx.doi.org/10.24198/pjdrs.v7i3.49983.
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ABSTRAKPendahuluan: Alginat merupakan bahan cetak yang paling umum digunakan pada kedokteran gigi, namun cetakan alginat dapat menjadi media penularan infeksi silang, oleh karena itu perlu didesinfeksi terlebih dahulu. Natrium hipoklorit dan ekstrak buah mengkudu merupakan desinfektan untuk alginat. Alginat mempunyai sifat imbibisi yang mempengaruhi stabilitas dimensi cetakan alginat, sehingga akurasi dan stabilitas dimensi cetakan alginat tetap perlu dipertahankan setelah proses desinfeksi. Tujuan penelitian menganalisis perbandingan stabilitas dimensi cetakan alginat yang direndam dan disemprot dengan natrium hipoklorit 0,5%, ekstrak buah mengkudu 12%, dan ekstrak buah mengkudu 16%. Metode: Penelitian eksperimental laboratorium dengan rancangan post test only group design dengan 12 kelompok uji dan total jumlah sampel 60. Cetakan alginat yang direndam dan disemprot dengan natrium hipoklorit 0,5%, ekstrak buah mengkudu 12%, dan ekstrak buah mengkudu 16% diisi gips, dengan masing-masing diuji pada perbedaan waktu 5 menit dan 10 menit kemudian diukur stabilitas dimensinya menggunakan jangka sorong digital. Data dianalisis dengan Two Way Anova, kemudian uji Post hoc Bonferroni. Hasil: Cetakan alginat yang direndam dengan sodium hipoklorit 0,5%, ekstrak buah mengkudu 12%, dan 16% mengalami perubahan dimensi yang lebih besar dibandingkan dengan yang disemprot dengan menggunakan sodium hipoklorit 0,5%, ekstrak buah mengkudu 12%, dan 16%. Uji Two Way Anova menunjukkan terdapat perbedaan yang signifikan (p<0,05) antara cetakan alginat yang direndam dan disemprot. Simpulan: Terdapat perbedaan stabilitas dimensi antara cetakan alginat yang direndam dan disemprot dengan natrium hipoklorit 0,5%, ekstrak buah mengkudu 12%, dan ekstrak buah mengkudu 16%, selama 5 dan 10 menit.KATA KUNCI: cetakan alginat, desinfeksi, ekstrak buah mengkudu, natrium hipoklorit, stabilitas dimensi.Comparison of dimensional stability between sprayed and immersed alginate impression with sodium hypochlorite and an extract of Morinda citrifolia: an experimental study ABSTRACTIntroduction: Alginate is the most common impression material used in dentistry; however, alginate impression results can be media transmission for cross infection, therefore it is important for disinfection. Sodium hypochlorite and the extract of morinda citrifolia are disinfectants for alginate. Alginate has some characteristics, such as imbibition, that can influence the dimensional stability and accuracy of the alginate impression. The purpose of this study was to determine the difference between the dimensional stability of immersed and sprayed alginate impressions with 0,5% sodium hypochlorite, 12%, and 16% Morinda citrifolia extract, with each tested at a time difference of 5 minutes and 10 minutes. Methods: Laboratory experiment with a posttest-only group design with a total of 60 samples in 12 groups. The alginate impression was immersed and sprayed with 0,5% sodium hypochlorite, 12% extract of Morinda citrifolia, and 16% extract of Morinda citrifolia, filled with gypsum, then measured for the dimensional stability using a digital caliper. Data were analyzed with Two Way Anova test and Post hoc Bonferroni test. Results: The dimension stability of an immersed alginate impression with 0.5% sodium hypochlorite, 12% extract of Morinda citrifolia, and 16% extract of Morinda citrifolia was greater than that of a sprayed alginate impression with 0.5% sodium hypochlorite, 12% extract of Morinda citrifolia, and 16% extract of morinda citrifolia. The Two Way Anova test showed significant difference (p<0,05) between the immersed and sprayed alginate impression. Conclusion: There are differences in the dimensional stability of alginate impression that was immersed and sprayed with 0.5% sodium hypochlorite, 12% extract of Morinda citrifolia, and 16% extract of Morinda citrifolia for 5 and 10 minutes.KEY WORDS: impression alginate, desinfection, extract of morinda citrifolia, sodium hypochlorite, dimensional stability.
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Kusumawati, Rinta, Jamal Basmal, and Bagus Sediadi Bandol Utomo. "Characteristics of Sodium Alginate Extracted from Turbinaria sp. and Sargassum sp." Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology 13, no. 2 (August 31, 2018): 79. http://dx.doi.org/10.15578/squalen.v13i2.297.
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Characterization of sodium alginate extracted from two species of brown seaweed (Turbinaria sp. and Sargassum sp.) has been conducted. The aim of the study was to evaluate physical and chemical properties of the two different types of sodium alginates produced from this extraction process. Extraction was conducted in alkaline solution followed by acid treatment with the following steps: sortation of seaweed, washing, alkaline extraction, bleaching, alginic acid and sodium alginate conversion, dehydration using isopropyl alcohol (IPA), drying, chopping and grinding. Each extraction was conducted in duplicate using approximately 1 kg of the raw materials. The physical and chemical properties of the final products (sodium alginate powders) were analyzed. The results of the analysis were as follows: the yield of alginate powder from Turbinaria sp. was 14.77% having water content of 13.48%; whiteness degree of 23.77%; and viscosity of 133.67 cPs while the yield of sodium alginate powder extracted from Sargassum sp. was 24.56% with water content of 12.69%; whiteness degree of 43.80%; and viscosity of 217.50 cPs. Both alginate powders had better physical characteristics compared to commercial grade alginate which had water content of 16.07%, whiteness degree of 29.37%, and viscosity of 102.67cPs.
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Wafiroh, Siti, Suyanto Suyanto, and Yuliana Yuliana. "PEMBUATAN DAN KARAKTERISASI MEMBRAN KOMPOSIT KITOSAN-SODIUM ALGINAT TERFOSFORILASI SEBAGAI PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC)." Jurnal Kimia Riset 1, no. 1 (June 1, 2016): 14. http://dx.doi.org/10.20473/jkr.v1i1.2436.
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AbstrakDi era globalisasi ini, kebutuhan bahan bakar fosil semakin meningkat dan ketersediannya semakin menipis. Oleh karena itu, dibutuhkan bahan bakar alternatif seperti Proton Exchange Membrane Fuel Cell (PEMFC). Tujuan dari penelitian ini adalah membuat dan mengkarakterisasi membran komposit kitosan-sodium alginat dari rumput laut coklat (Sargassum sp.) terfosforilasi sebagai Proton Exchange Membrane Fuel Cell (PEMFC). PEM dibuat dengan 4 variasi perbandingan konsentrasi antara kitosan dengan sodium alginat 8:0, 8:1, 8:2, dan 8:4 (b/b). Membran komposit kitosan-sodium alginat difosforilasi dengan STPP 2N. Karakterisasi PEM meliputi: uji tarik, swelling air, kapasitas penukar ion, FTIR, SEM, permeabilitas metanol, dan konduktivitas proton. Berdasarkan hasil analisis tersebut, membran yang optimal adalah perbandingan 8:1 (b/b) dengan nilai modulus young sebesar 0,0901 kN/cm2, swelling air sebesar 19,14 %, permeabilitas metanol sebesar 72,7 x 10-7, dan konduktivitas proton sebesar 4,7 x 10-5 S/cm. Membran komposit kitosan-sodium alginat terfosforilasi memiliki kemampuan yang cukup baik untuk bisa diaplikasikan sebagai membran polimer elektrolit dalam PEMFC. Kata kunci: kitosan, sodium alginat, terfosforilasi, PEMFC AbstractIn this globalization era, the needs of fossil fuel certainly increases, but its providence decreases. Therefore, we need alternative fuels such as Proton Exchange Membrane Fuel Cell (PEMFC). The purpose of this study is preparationand characterization of phosphorylated chitosan-sodium alginate composite membrane from brown seaweed (Sargassum sp.) as Proton Exchange Membrane Fuel Cell (PEMFC). PEM is produced with 4 variations of concentration ratio between chitosan and sodium alginate 8:0, 8:1, 8:2, and 8:4 (w/w). Chitosan-sodium alginate composite membrane phosphorylated with 2 N STPP. The characterization of PEM include: tensile test, water swelling, ion exchange capacity, FTIR, SEM, methanol permeability, and proton conductivity. Based on the analysis result, the optimal membrane is ratio of 8:1 (w/w) with the value of Young’s modulus about 0.0901 kN/cm2, water swelling at 19.14%, methanol permeability about 72.7 x 10-7, and proton conductivity about 4.7 x 10-5 S/cm. The phosphorylated chitosan-sodium alginate composite membrane has good potentials for the application of the polymer electrolyte membrane in PEMFC. Keywords: chitosan, sodium alginate, phosphorylated, PEMFC
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Utami, U., D. C. W. Putra, and L. Harianie. "Viability test of yeast encapsulation (Candida tropicalis) using sodium alginate polymer in bread production." IOP Conference Series: Earth and Environmental Science 1312, no. 1 (February 1, 2024): 012053. http://dx.doi.org/10.1088/1755-1315/1312/1/012053.
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Abstract This study explores sodium alginate encapsulation’s impact on Candida tropicalis yeast cell viability and its influence on bread making. Encapsulation protects yeast cells from damage during drying and storage. The research used 10% and 15% sodium alginate for two isolates and one control. Statistical analysis, including Kruskal Wallis and Mann-Whitney tests in Microsoft Excel SPSS, showed significant effects. Sodium alginate encapsulation notably improved Candida tropicalis yeast cell viability and final bread swelling, especially at 15% concentration. Mann-Whitney tests on organoleptic parameters revealed panelist preferences: Candida tropicalis 2 with 15% sodium alginate for color, taste, and texture, while Candida tropicalis 1 with 15% sodium alginate for aroma. This study suggests sodium alginate’s potential to enhance yeast viability and improve bread quality, offering insights for food processing and preservation applications. The research findings may contribute to developing effective encapsulation techniques for yeast-based products.
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Adamiak, Katarzyna, and Alina Sionkowska. "State of Innovation in Alginate-Based Materials." Marine Drugs 21, no. 6 (June 8, 2023): 353. http://dx.doi.org/10.3390/md21060353.
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This review article presents past and current alginate-based materials in each application, showing the widest range of alginate’s usage and development in the past and in recent years. The first segment emphasizes the unique characteristics of alginates and their origin. The second segment sets alginates according to their application based on their features and limitations. Alginate is a polysaccharide and generally occurs as water-soluble sodium alginate. It constitutes hydrophilic and anionic polysaccharides originally extracted from natural brown algae and bacteria. Due to its promising properties, such as gelling, moisture retention, and film-forming, it can be used in environmental protection, cosmetics, medicine, tissue engineering, and the food industry. The comparison of publications with alginate-based products in the field of environmental protection, medicine, food, and cosmetics in scientific articles showed that the greatest number was assigned to the environmental field (30,767) and medicine (24,279), whereas fewer publications were available in cosmetic (5692) and food industries (24,334). Data are provided from the Google Scholar database (including abstract, title, and keywords), accessed in May 2023. In this review, various materials based on alginate are described, showing detailed information on modified composites and their possible usage. Alginate’s application in water remediation and its significant value are highlighted. In this study, existing knowledge is compared, and this paper concludes with its future prospects.
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Aguanza, Ma Aezel, Roberta Lauzon, and Ivy Emnace. "Improving the Extraction Process of Sodium Alginate from Samu (Sargassum piluliferum) using the PlackettBurman Design." Science and Humanities Journal 12, no. 1 (December 1, 2018): 54–65. http://dx.doi.org/10.47773/shj.1998.111.4.
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Alginates, which are mainly produced from kelp, improve and stabilize the texture of foods. Thus, they are important in the food and beverage industry. Brown seaweeds such as Sargassum piluliferum are abundant in the Philippines and could be potential sources of alginates. The PlackettBurman screening was used as a tool to evaluate the importance of seven selected variables (formaldehyde solution, extractant ratio, Na2CO3 concentration, HCl concentration, extraction temperature, bleaching, and precipitant), which influence the extraction process of sodium alginates. The main factors that affected the extraction of sodium alginates were extraction ratio, Na CO concentration, and bleaching. Extraction ratio and 2 3 Na CO significantly affected the production of sodium alginate by lowering 2 3 the level of extractant concentration and obtaining a positive effect in terms of its yield. Bleaching with NaOCl did not significantly affect the yield. However, it had a positive effect on the purity of the alginate which is an essential physico-chemical parameter that reflects the proportion of the target compound. These factors could be further optimized to extract high yield and good quality sodium alginate from Sargassum piluliferum.
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Yudiati, Ervia, and Alim Isnansetyo. "Characterizing the Three Different Alginate Type of Sargassum siliquosum." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 22, no. 1 (March 1, 2017): 7. http://dx.doi.org/10.14710/ik.ijms.22.1.7-14.
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This research was aimed to identify the brown seaweed, to characterize the acid, sodium and calcium alginate, and to examine the alginate yield. The identification was done phaenotypically. The extraction method was pretreated by ethanol depigmentation, followed by the extraction of Na2CO3/EDTA and CaCl2 and presipitated with absolute ethanol. The characterization of alginate was done by FT-IR spectroscopy and Thin Layer Chromatography by comparing the samples with standard alginate (Sigma, USA). The key of identification showed that the species was Sargassum siliquosum. There are similarities in signal vibration and TLC spots among the samples and the standard. The TLC test was also showed that those alginates contain mannuronic and guluronic acid. The highest yield was produced by Sodium alginate (40,34% + 0,21), followed by Acid alginate (11,51% + 0,15) and Calcium alginate (4,8% + 0,09). Keywords: alginate, characterization, Sargassum siliquosum, yield
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&NA;. "Sodium alginate." Reactions Weekly &NA;, no. 1002 (May 2004): 14. http://dx.doi.org/10.2165/00128415-200410020-00045.
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Purwanto, Ungsari Rizki Eka. "FORMULATION OF VITAMIN C GEL SERUM USING SODIUM ALGINATE FROM BROWN ALGAE (Sargassum polycystum) AS GELLING AGENT." Journal of Science and Technology Research for Pharmacy 2, no. 1 (May 4, 2023): 1–8. http://dx.doi.org/10.15294/jstrp.v2i1.64852.
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Background : Brown algae contains alginate which can be used as a gelling agent on cosmetics product. In this study, alginates from brown algae can be formulated on antioxidant serum gel. Vitamin C was used as a model of active ingredient which are known as potent antioxidants. In order to obtain a serum gel preparation with good physical characteristics, optimization was also carried out in the formula between sodium alginate as a gelling agent and propylene glycol as a humectant.
Aim : The purpose of the research is to determine the yield of sodium alginate produced from brown algae extraction, and determine the optimum ratio between sodium alginate and propylenglycol to provide good physical characteristics for vitamin C serum gel.
Method : The extraction method used to obtain sodium alginate from brown algae Sargassum polycystum using the acid pathway extraction method. The method used to optimize sodium alginate and propylenglycol is the Simplex Latice Design method with Design Expert software version 10.0.1. Optimization parameters included tests of viscosity, spreadability, adhesion, and pH. Penetration test using franz diffusion cells, and the stability test of the preparation using the cycling test method.
Result : The yield of sodium alginate extraction was 20.61%. Results of analysis software Design Expert version 10.0.1 show that sodium alginate could increase the response of viscosity, adhesion, and pH, also reduce the spreadability of vitamin C serum gel. While, propylenglycol could increase all the responses.
Conclusion : The yield of brown algae (Sargassum polycystum) obtained was 20.61% with the combined composition with propylene glycol in the preparation of serum gel vitamin C being 7.56% : 10.44%.
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Indahyani, Didin Erma, Izzata Barid, and Priska Amelia Anggraeni. "The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment." Padjadjaran Journal of Dentistry 35, no. 3 (January 13, 2024): 274. http://dx.doi.org/10.24198/pjd.vol35no3.49071.
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ABSTRACT Introduction: Alginate is a type of elastic dental impression, which is an irreversible hydrocolloid. The main components in sodium alginate can be obtained naturally through the extraction process from seaweed (Kappaphycus alvarezii). Several physical characteristics must be fulfilled by dental impressions, such as dimensional stability related to imbibition and syneresis. ANSI/ADA specification No.18 regarding the maximum permitted change in alginate impression materials may not exceed 0.5%. This research aimed to analyze the value of imbibition and syneresis on dental impressions of red seaweed extract (K.alvarezii). Methods: The research was conducted using an experimental laboratory method with a post-test-only control group design. There were two groups, namely the control group of commercial dental impressions and the treatment group using dental impressions with the sodium alginate extracted from red seaweed (K.Alvarezii) by the acid method, and the FTIR test was performed to analyze compound sodium alginate. Imbibition and syneresis measurements were carried out using a calliper on a plaster cast model from negative mould casting results, where previously, the mould was soaked in water for imbibition and evaporated for syneresis. Results: Imbibition and syneresis tests showed that the impression material group with sodium alginate from red algae was significantly lower than those with commercial impression materials. It was concluded that the impression material with sodium alginate from red seaweed had an effect on reducing the percentage of syneresis (p≤0.05) and imbibition (p≤0.05) of the impression material. Based on the results of our research, it was found that the alginate impression material extracted from red seaweed (k.alvarezii) had an imbibition value of 0.33% (p≤0.05) and syneresis of 0.28%, (p≤0.05) lower compared to alginate impression materials. commercial alginate impression material. Conclusion: The imbibition and syneresis values of red seaweed alginate show an excessively low value compared to commercial alginates. KEYWORDS dental impression,sodium alginate, Kappaphycus alvarezii, imbibition, syneresis
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Štulajterová, R., L. Medvecký, M. Giretová, T. Sopčák, and J. Briančin. "Influence of Sodium Alginate on Properties of Tetracalcium Phosphate/Nanomonetite Biocement." Powder Metallurgy Progress 19, no. 1 (September 1, 2019): 1–11. http://dx.doi.org/10.1515/pmp-2019-0001.
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AbstractThe tetracalcium phosphate/nanomonetite (TTCPMH) biocements with the addition of sodium alginate were prepared by mechanical homogenization of powder mixture with hardening liquid containing sodium alginate. The effect of various viscosity of different alginates on properties of TTCPMH cement mixture was investigated. The medium viscous (MED) alginate had a more negative effect on setting process and compressive strength than low viscous (LOW) alginate. An approx. 50% decrease in mechanical properties (compressive strengths, Young´s modulus, work of fracture (WOF)) was revealed after an addition of 0.25 wt % with rapid fall above 1 wt % of LOW alginate in biocement. A statistically significant difference in the WOF was found between of 0.25 and 0.5 LOW alginate biocements (p<0.035) whereas no statistical differences were revealed between WOF of 0.5 and 1 LOW alginate biocements (p˃0.357). In the microstructure of composite cements, the increased amounts of granular or finer needle-like nanohydroxyapatite particles arranged into the form of more separated spherical agglomerates were observed. A low cytotoxicity of cement extracts based on measurement of cell proliferation was revealed.
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Amelia, An Nisaa, Netti Suharti, and Eni Rahmi. "PERBEDAAN STABILITAS DIMENSI ANTARA CETAKAN ALGINAT YANG DIBERI DESINFEKTAN EKSTRAK DAUN ALPUKAT (Persea americana mill) DENGAN NATRIUM HIPOKLORIT." Andalas Dental Journal 5, no. 2 (December 5, 2017): 78–87. http://dx.doi.org/10.25077/adj.v5i2.73.
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Background : Alginat is one of the most used impression material in dentistry.. Alginate impression need to be disinfected to prevent cross-infection. One of effective natural material that can be used as disinfectant is avocado leaves. The process of disinfection could interfered the dimensional stability of alginate impression caused of imbibition properties in alginate itself. Purpose : To determine the differences of dimensional stability of alginate impression which disinfected with avocado leave extract 100% compared 0.5% sodium hypochlorite.
Method : This research was an experimental laboratory with post -test only control group design.
Sample were divided into 3 groups, 1 group were sprayed with aquadest as control group and 2 treatment groups were sprayed with avocado leaves extract 100% and 0.5% sodium hypochlorite and stored for 10 minutes. The impression then casted with gypsum in cylinder mold and diameter of the cast were measured. The One Way ANOVA test were used to determine the dimensional stability of the difference between the groups.
Result :The results showed that the alginate impression which disinfected with avocado leaves
extract 100% have a significant dimensional change, that is 0.123 ± 0.011 mm compared with 0.5% sodium hypochlorite only 0.034 ± 0.011 mm.
Conclution : There are differences in dimensional stability of alginate impression which disinfected with avocado leaf extract 100% and 0.5% sodium hypochlorite.
Keywords:Dimensional stability, avocado leaves extract, and sodium hypochlorite
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Giannakas, Aris E., Konstantinos Zaharioudakis, Eleni Kollia, Anna Kopsacheili, Learda Avdylaj, Stavros Georgopoulos, Areti Leontiou, et al. "The Development of a Novel Sodium Alginate-Based Edible Active Hydrogel Coating and Its Application on Traditional Greek Spreadable Cheese." Gels 9, no. 10 (October 7, 2023): 807. http://dx.doi.org/10.3390/gels9100807.
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The necessity of reducing the greenhouse effect by decreasing the carbon dioxide fingerprint directed the food packaging technology to use biobased raw materials. Alginates, which are derived from brown algae species, are one of the most promising biobased biopolymers for the development of edible active coatings capable of protecting food from oxidation/bacterial spoilage. In this study, sodium alginate, which was plasticized with glycerol and mixed with a biobased thymol/natural halloysite nanohybrid, was used to develop novel edible active coatings. Nanocomposite coatings were also developed in this project by mixing pure halloysite with sodium alginate/glycerol matrix and were used as reference material for comparison reasons. Instrumental analysis indicated a higher compatibility of a thymol/halloysite nanohybrid with a sodium alginate/glycerol matrix compared to pure halloysite with a sodium alginate/glycerol matrix. Increased compatibility resulted in improved tensile properties, water/oxygen barrier properties, and total antioxidant activity. These edible active coatings were applied to traditional Greek spread cheese and showed a reduction in the mesophilic microbial population over one log10 unit (cfu/g) compared to uncoated cheese. Moreover, the reduction in the mesophilic microbial population increased with the increase in halloysite and thymol content, indicating such sodium alginate/glycerol/thymol/halloysite hydrogels as promising edible active coatings for dairy products.
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Hasatsri, Sukhontha, Anuphap Pitiratanaworanat, Suwit Swangwit, Chadaporn Boochakul, and Chamaipond Tragoonsupachai. "Comparison of the Morphological and Physical Properties of Different Absorbent Wound Dressings." Dermatology Research and Practice 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/9367034.
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Good quality wound dressings should have exceptional properties for usage, such as being able to remove excess wound exudates, having rapid dehydration, and providing optimal water vapour permeability. This study evaluated and compared the morphological and physical properties of six different commercially absorbent wound dressings in Thailand: two hydrocolloids, two alginates, and two foams. These wound dressings are available in a variety of components and structures, some of which have a multilayer structure. The results showed that the calcium sodium alginate dressings had better absorption properties than the calcium alginate dressings, hydrocolloid dressings, hydrocolloid with foam layer dressings, foam with polyurethane film layer dressings, and foam with hydrogel and polyurethane film layer dressings. Furthermore, the calcium sodium alginate dressings had the highest rate of dehydration and provided an optimal water vapour transmission rate. However, the calcium sodium alginate dressings could not retain the original structure after being submerged with a wound exudate.
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Arif, U., M. Nawaz, and Abdelatif Salmi. "Numerical study of simultaneous transport of heat and mass transfer in Maxwell hybrid nanofluid in the presence of Soret and Dufour effects." Physica Scripta 97, no. 2 (January 31, 2022): 025207. http://dx.doi.org/10.1088/1402-4896/ac4d46.
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Abstract The article aims to investigate the influence of copper (Cu) and a combination of copper (Cu) and aluminum oxide (Al2O3) on the simultaneous transfer of heat and mass in sodium alginate liquid moving over a circular pipe. This transport activity is modeled by the use of conservation laws with correlations for physical quantities of Cu, Al2 O3, and sodium alginate. Through cylindrical coordinates formulation, the set of partial differential equations is obtained. These models are solved numerically by the finite element method (FEM). The relaxation time associated with momentum diffusion in Maxwell fluid plays role in controlling the viscous region. Moreover, momentum relaxation time in Cu/sodium alginate is strong than that in Cu–Al2O3/sodium alginate. It is noticed from simulations that particles of Cu/ sodium alginate have a greater velocity than the velocity of Cu–Al2O3/sodium alginate. Therefore, distortion of magnetic lines by the flow of Cu/sodium alginate is more than the distortion of magnetic lines by the flow of Cu–Al2O3/sodium alginate. The rise in the thermal conductivity of sodium alginate due to simultaneous dispersion of Cu and Al2O3 is more than the rise in thermal conductivity of sodium alginate. Thus for maximum HT, the simultaneous dispersion of Cu and Al2O3 in sodium alginate is recommended.
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Lou, Ching Wen, Chao Tsang Lu, Shih Yu Huang, Po Ching Lu, Chao Chiung Huang, and Jia Horng Lin. "Preparation of Functional Low-Cohesive Composite Dressings." Advanced Materials Research 123-125 (August 2010): 495–98. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.495.
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Sodium alginate and Chitosan are common bio-medical dressing material, and drug delivery due to their excellent biocompatibility, biodegradability and non-toxicant. The purpose of dressing aimed at accelerating wound healing. In this study, sodium alginate/Chitosan composite solution composed of Chitosan particles and well-stirred sodium alginate solution. The PLA/cotton nonwoven was the base fabric. The sodium alginate/Chitosan composite solution was later sprayed upon the fabric, so a sodium alginate/Chitosan/PLA/absorbent cotton composite dressing was prepared. Calcium chloride was applied to strengthen the bonding between the sodium alginate/Chitosan solution and the fabric. Mechanical property and SEM of the sodium alginate/Chitosan/PLA/ absorbent cotton composite dressing’ were evaluated.
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Xu, Guo Kai, Lin Liu, and Ju Ming Yao. "Fabrication and Characterization of Alginate Fibers by Wet-Spinning." Advanced Materials Research 796 (September 2013): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amr.796.87.
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Alginate fibers were prepared by extruding a concentrated sodium alginate solution into calcium chloride coagulation bath. The rheological behavior of different concentrations of sodium alginate solutions were investigated to evaluate the spinnability. The effect of dope concentration on the morphologies and mechanical properties of resulting alginate fibers were examined. The results showed that sodium alginate solutions were pseudoplastic fluid and had good spinnability with concentration ranging in 1.5%-3.5%. Moreover, the morphology of obtained fibers became smoother with increasing sodium alginate concentrations. When the sodium alginate concentration was 3.5%, the tensile strength and elongation at break of alginate fibers reach to 13.6±1.2 cN/tex and 8±0.5%, respectively.
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Iriyanti, Tanti, Abdul Wahid Wahab, and Rohani Bahar. "POTENTIAL NA-ALGINATE EXTRACT FROM BROWN ALGAE sargassum sp. OF THE MANGO MATURATION PROCESS." Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) 11, no. 2 (May 30, 2019): 17. http://dx.doi.org/10.20956/ica.v11i2.6488.
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Extraction of Na-alginate from Sargassum sp. and its application in ripening mangoes has conducted. This research aimed to determine the mango storage period by using sodium alginate solution as edible coating and optimum concentration that has maximum inhibition power to the maturation the mango. The FTIR result shows that sodium alginate by the result ofthe extraction has the same similar functional group to the sodium alginate in the factory. Quantitative analysis show that content of sodium alginate as the result of the extraction is 22,42%, sodium alginate solution is 1% has pH 10,97 and the viscosity is 90 cps, the water measure of sodium alginate is 11,27% with the measure of ash is 41,47%. By testing the ability of sodium alginate conducted on mango with submersion method in the solution concentration from 0-50 ppm. At a concentration of 20 ppm solution shows that the maximum of storage period is about 15 days at room temperature while without submersion is just about 5 days. By this study, we indicate that sodium alginate potentially as coating fruit preservation.
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Santana, Ismael, Manuel Felix, and Carlos Bengoechea. "Feasibility of Invasive Brown Seaweed Rugulopteryx okamurae as Source of Alginate: Characterization of Products and Evaluation of Derived Gels." Polymers 16, no. 5 (March 5, 2024): 702. http://dx.doi.org/10.3390/polym16050702.
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Rugulopteryx okamurae (RO) is an invasive brown seaweed that causes severe environmental problems in the Mediterranean Sea. This work proposed an extraction method that enables their use as a raw material for producing sodium alginate. Alginate was successfully extracted from this invasive seaweed, with its gelling performance in the presence of Ca2+ ions comparable to existing commercial alginates. The mannuronic acid (M)-to-guluronic (G) acid ratio in the 1H-NMR profile indicated a higher percentage of G in the RO-extracted alginate, which implies a greater formation of so-called egg box structures. These differences resulted in their different rheological behaviour, as sodium alginate aqueous solutions exhibited a greater viscosity (η at 1 s−1 = 3.8 ± 0.052 Pa·s) than commercial alginate (2.8 ± 0.024 Pa·s), which is related to the egg box structure developed. When gelled in the presence of calcium, an increase in the value of the elastic modulus was observed. However, the value of the tan δ for the extracted alginate was lower than that of commercial alginate gels, confirming a structure more densely packed, which implies a different restructuring of the alginate chain when gelling. These results confirm the suitability of using invasive Rugulopteryx okamurae as a source of calcium alginate gels. In this way, sustainable bio-based materials may be produced from undesired biomass that currently poses a threat to the ecosystem.
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WARDANI, WIWIN DWI, KAWIJI KAWIJI, and GODRAS JATI MANUHARA. "Isolation and characterization of sodium alginate from brown algae Sargassum sp. for making tenggiri (Scomberomorus commerson) meatballs." Biofarmasi Journal of Natural Product Biochemistry 7, no. 2 (August 17, 2011): 59–67. http://dx.doi.org/10.13057/biofar/f070201.
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Wardani WD, Kawiji, Manuhara GJ. 2009. Isolation and characterization of sodium alginate from brown algae Sargassum sp. for making tenggiri (Scomberomorus commerson) meatballs. Biofarmasi 7: 59-67. Brown algae Sargassum sp. widespread in territorial of Indonesia. Sargassum sp. can be extracted for the yield compound of sodium alginate that can be applied in making the tenggiri meatballs to take care the emulsion stability and to repair the properties of rheology. This research used a Completely Randomized Design (CRD) with one factor that was a variation of sodium alginate addition, i.e. F1 (0% alginate), F2 (0.25% alginate), F3 (0.5% alginate), F4 (0.75% alginate) and F5 (0.5% STPP). The result of research showed the characteristics of sodium alginate of seaweeds Sargassum sp. from the extraction result included: water rate [5.94% (wb)]; ash rate [19.62% (wb) and 20.86% (db)]; the pH value of condensation of sodium alginate 0.1% (9.07), the pH value of condensation of sodium alginate 0.2% (9.07), the pH value of condensation of sodium alginate 0.3% (9.06), water absorption (214.44%), and rendement (31.62%). The addition of sodium alginate in the making tenggiri meatballs improved the hardness and elasticity of meatballs. The highest hardness level of tenggiri meatballs was formula F4 (0.75% alginate) and the highest elasticity level of tenggiri meatballs was with an addition of sodium alginate formula F4. The result of organoleptic test indicated that an addition of sodium alginate tends to improve panelist pleasure to color, flavor, taste, elasticity and hardness of tenggiri meatballs. The tenggiri meatballs formula F4 represented the formula which the most liked by the panelists. The chemical characteristic of tenggiri meatballs formula F4 including: water rate (74.61%), ash rate (1.66%), protein rate (14.53%), fat rate (0.93%) and carbohydrate rate (8.26%).
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Nesic, Aleksandra, Maria Valeria De Bonis, Giovanni Dal Poggetto, Gianpaolo Ruocco, and Gabriella Santagata. "Microwave Assisted Extraction of Raw Alginate as a Sustainable and Cost-Effective Method to Treat Beach-Accumulated Sargassum Algae." Polymers 15, no. 14 (July 8, 2023): 2979. http://dx.doi.org/10.3390/polym15142979.
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This paper highlights the potential of Sargassum algae, recovered from raw beach seaweed wastes, as a valid source of valuable sodium alginate. Alginate is a biodegradable, highly attractive polysaccharide widely used in food, pharmaceuticals, and biomedicine applications. The aim of this work is to employ a new eco-sustainable and cost-effective extractive method to obtain alginate as a raw material from pollutant organic Sargassum seaweeds. Algae were exposed to microwave pre-treatment under static and dynamic conditions, and three different extractive protocols were followed: (a) conventional, (b) hot water and (c) alkaline method. All samples were characterized by GPC, SEM, FTIR/ATR and TGA. It was found that alginate’s best performances were obtained by the microwave dynamic pre-treatment method followed by alkaline extractive protocol. Nevertheless, the microwave pre-treatment of algae allowed the easiest breaking of their cell walls and the following fast releasing of sodium alginate. The authors demonstrated that microwave-enhanced extraction is an effective way to obtain sodium alginate from Sargassum-stranded seaweed waste materials in a cost-effective and eco-sustainable approach. They also assessed their applications as mulching films for agricultural applications.
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Muhamad Rahim, Nur Syairah, Norlaily Ahmad, and Dzaraini Kamarun. "Preparation and Characterization of Chitosan/Alginate Polyelectrolyte Complex Prepared by Using Calcium Tripolyphosphate Ionic Gelator." Materials Science Forum 857 (May 2016): 447–51. http://dx.doi.org/10.4028/www.scientific.net/msf.857.447.
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The formation of polyelectrolyte complexes (PECs) between chitosan and alginate has been widely investigated for many pharmaceutical and biomedical uses. Ionotropic gelation resulted from the crosslinking of polyelectrolytes (PEs) in the presence of ionic crosslinkers to form hydrogels. The most widely used ionic crosslinker for chitosan is sodium tripolyphosphate (NaTPP); and Ca2+ ions for alginates. The use of these cross-linkers to prepare PECs of chitosan and alginates resulted in hydrogels of similar moieties: chitosan-chitosan and alginate-alginate rather than the sought for hybrid chitosan-alginate PECs. Calcium tripolyphosphate (CaTPP) is a single molecule ionic gelator of chitosan and alginate that have the capability of producing the true hybrid compound of chitosan/alginate polyelectrolyte complex. This paper reported the synthesis of calcium tripolyphosphate and the preparation of a hybrid chitosan/alginate PECs using this newly identified ionic gelator. The newly-synthesized ionic gelator was characterized using ICP-OES; the PECs thereof prepared were characterized using TGA and SEM. The degradation temperature of the prepared PECs is higher than the degradation temperatures of the individual chitosan and alginates. SEM image of the prepared PECs showed rougher surfaces compared to the images of the individual chitosan and alginate compound. Both TGA and SEM revealed the possibility of the newly prepared material to be of the PECs sought for.
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Nicholson, S. J., R. Horder, D. Attwood, and J. H. Collett. "INVESTIGATION OF DRUG RELEASE FROM SODIUM ALGINATE-SODIUM CALCIUM ALGINATE MATRICES." Journal of Pharmacy and Pharmacology 42, S1 (December 1990): 2P. http://dx.doi.org/10.1111/j.2042-7158.1990.tb14375.x.
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Lou, Ching Wen, Chao Tsang Lu, Shih Peng Wen, Ching Wen Lin, Chieh Yu Chao, and Jia Horng Lin. "Preparation and Evaulation of Degradable Poly(lactic acid) Composite Dressings." Advanced Materials Research 123-125 (August 2010): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.177.
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Chitosan and sodium alginate are two prominent biomaterials because they have some unique properties such as good biocompatible and biodegradable. In this study, sodium alginate was as swelling and moisture retention layer; Chitosan was antibacterial layer.Polylactic acid (PLA) blended in different weight ratios with low melting point polylactic acid (LMPLA) to fabricate nonwoven fabric which reinforced by needle punching and hot pressing. Afterward, chitosan/ sodium alginate compound solution were treated by UV light in order to form cross-linking. Then chitosan/ sodium alginate compound solution coated on the PLA nonwoven fabric to make PLA composite dressings. The mechanical properties of chitosan/ sodium alginate membrane and dressing were measured. The optimum parameters of chitosan/sodium alginate composite membrane was treated by UV light for five minutes and the volume ratio of chitosan (3 wt %) and sodium alginate (1 wt %) solution was 8:2. After we coated chitosan/sodium alginate solution on PLA nonwoven fabric, the Tensile strength, and tear strength were upgraded by 80 % and 98 %; its air permeability and flexibility length, however, dropped by 18 % and 60 %, respectively.
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Kollár, Mariann, Gabriella Zsoldos, and Tamás Szabó. "UHMWPE Modified Sodium Alginate." Materials Science Forum 812 (February 2015): 101–6. http://dx.doi.org/10.4028/www.scientific.net/msf.812.101.
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Aim of our experiments was to modify prosthetic material UHMWPE powder using sodium alginate. The sodium alginate has an important property that the appropriate chemical reagent could exchange its Na+ions to Ca2+ions. The Ca has important role in the healing process, so modifying this substance the UHMWPE material helps patients healing. In the first step we examined that the raw material UHMWPE powder is necessary to be treated in order to adhere alginate at the surface of the UHMWPE powder. In a second step, we examined that insoluble Ca alginate coating left at the surface of UHMWPE powder after the exchange of Na ions. The treated powders were analyzed by Fourier Transformed Infrared Spectroscopy and Diffential Scanning Calorymetry methods. SEM investigations were carried out on the prepared samples moreover energy-dispersive X-ray spectroscopy (EDAX) measurements were performed,-for detection of the presence of small amounts of Na and Ca ions. It has been found that the complex and complicated Caro’s acid chemical treatment is unnecessary in order to prepare alginate coated substrates. The best results were achieved by selecting the correct order of surface layer preparation; first coating the substrate with alginate solution then treating with aqueous CaCl2.
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Rahayu, Putu Sadaka Putri, Depi Praharani, Niken Probosari, Didin Erma Indahyani, and Izzata Barid. "Aktivitas Antibakteri Bahan Cetak Berbasis Ekstrak Natrium Alginat dari Alga Merah (Kappaphycus alverezii) terhadap Lactobacillus acidophilus." STOMATOGNATIC - Jurnal Kedokteran Gigi 20, no. 1 (March 30, 2023): 13. http://dx.doi.org/10.19184/stoma.v20i1.38592.
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Alginate impression material is a material that is often used for impression tissue in the oral cavity, and can be one of the agents of infection transmission in dental practice. Microorganisms can adhere to the mold such as Lactobacillus acidophilus bacteria. L. acidophilus were isolated from active caries and were considered as secondary invaders in the dental caries invasion process. The development of impression materials that have antibacterial capabilities needs to be done, one of which is by using materials derived from red algae (Kappaphycus alverezii). This plant contains a lot of alginate which is the main components of the cell wall, consisting of calcium, magnesium, sodium and potassium alginate salts. Synthesizing sodium alginate from red algae and analyzing the antibacterial activity of sodium alginate-based impression materials from red algae against L. acidophilus. Extraction of alginate from red algae using the acid method and conversion of alginic acid to sodium alginate by adding NaOH. The impression material is made with the addition of sodium alginate. Antibacterial activity test by well diffusion method. This study consisted of 3 groups, namely control (K), red algae sodium alginate extract (P1), and impression material with red algae sodium alginate extract (P2). Groups K, P1 and P2 had an average inhibition zone of 0 mm, 15.56 mm, 17.22 mm, respectively. Kruskal Wallis and Mann Whitney test showed significant differences between groups. Impression material based on sodium alginate extract from red algae has strong antibacterial activity against L. acidophilus.
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Işiklan, Nuran. "Controlled release of insecticide carbaryl from sodium alginate, sodium alginate/gelatin, and sodium alginate/sodium carboxymethyl cellulose blend beads crosslinked with glutaraldehyde." Journal of Applied Polymer Science 99, no. 4 (2005): 1310–19. http://dx.doi.org/10.1002/app.22012.
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Refaat, Ahmed, Hanan Elhaes, Nabila S. Ammar, Hanan S. Ibrahim, and Medhat Ibrahim. "Green Route for the Removal of Pb from Aquatic Environment." Combinatorial Chemistry & High Throughput Screening 23, no. 7 (October 5, 2020): 587–98. http://dx.doi.org/10.2174/1386207323666200127123349.
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Aim and Objective: Wastewater treatment/remediation is a very important process that has a great environmental and economic impact. Therefore, it is crucial to innovate different methods to remove pollutants of different sources from wastewater. This work was conducted in order to study the removal of lead (Pb+2) from wastewater using microspheres of composites of sodium alginate, cellulose and chitosan, as well as using a cost-effective green route through composites of sodium alginate and dried water hyacinth. Materials and Methods: Molecular modeling at B3LYP/6-31g(d,p) was utilized to study sodium alginate, cellulose and chitosan. Sodium alginate was cross-linked with calcium chloride to form microspheres, then both sodium alginate/cellulose and sodium alginate/chitosan were also crosslinked as 50/50 to form microspheres. The roots of the aquatic plant water hyacinth in dry form were added to the cross-linked sodium alginate for up to 70%. SEM and FTIR were employed to study the surface of the prepared microspheres and their structures respectively. Atomic absorption spectroscopy was used to study the levels of Pb. Results: Molecular modeling indicated that the blending of such structures enhances their ability to bind with surrounding molecules owing to their ability to form hydrogen bonds. SEM results indicated that homogeneous structures of cellulose and chitosan are deformed when blended with sodium alginate, and FTIR confirmed the proper formation of the desired blends. Microspheres from sodium alginate showed the ability to remove Pb+2 from wastewater. SEM indicated further deformation in the morphology with the roughness of sodium alginate/water hyacinth microspheres, while FTIR confirmed the uniform matrices of the microspheres. The removal of Pb+2 was enhanced because of the addition of dried water hyacinth's roots. Conclusion: Modeling, experimental and kinetic data highlight sodium alginate/water hyacinth root as a green route to remediate Pb+2 from wastewater.
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Chen, He, Ye Wang, Guo Wei Shu, and Ya Li Jia. "Effect of Alginate and Cell Suspension on Viable Counts and Efficacy of Entrapment of Encapsulated B. bifidum BB28." Advanced Materials Research 531 (June 2012): 499–502. http://dx.doi.org/10.4028/www.scientific.net/amr.531.499.
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This study reports the encapsulation yield (EY) of B. bifidum BB28 encapsulated in different sodium alginate concentrations and in different proportion of BB28 and sodium alginate.It was studied by enumeration of viable cells after depolymerization of the capsules in 9mL trisodium citrate, followed by using MRS agar at 37°C for 48 h. The concentrations of sodium alginate was 1.5%, 2.0%, 2.5% and 3.0%.The proportion of cell suspension and sodium alginate was 1:5,1:10,1:15 and 1:20. Results were as follows: The optimum concentration of sodium alginate concentrations was 2.5% and the optimum proportion of cell suspension and sodium alginate was 1:10.
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Kalogeropoulou, Flora, Dimitra Papailiou, Chrystalla Protopapa, Angeliki Siamidi, Leto-Aikaterini Tziveleka, Natassa Pippa, and Marilena Vlachou. "Design and Development of Low- and Medium-Viscosity Alginate Beads Loaded with Pluronic® F-127 Nanomicelles." Materials 16, no. 13 (June 29, 2023): 4715. http://dx.doi.org/10.3390/ma16134715.
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The anionic polymer sodium alginate, a linear copolymer of guluronic and mannuronic acids, is primarily present in brown algae. Copolymers are used in the sodium alginate preparation process to confer on the material strength and flexibility. Micelles and other polymeric nanoparticles are frequently made using the triblock copolymer Pluronic® F-127. The purpose of the present study is to determine the effect of sodium alginate’s viscosity (low and medium) and the presence of Pluronic® F-127 micelles on the swelling behavior of the prepared pure beads and those loaded with Pluronic® F-127 micelles. The Pluronic® F-127 nanomicelles have a size of 120 nm. The swelling studies were carried out at pH = 1.2 (simulated gastric fluid-SGF) for two hours and at pH = 6.8 (simulated intestinal fluid-SIF) for four more hours. The swelling of both low- and medium-viscosity alginate beads was minor at pH = 1.2, irrespective of the use of Pluronic® F-127 nanomicelles. At pH = 6.8, without Pluronic® F-127, the beads showed an enhanced swelling ratio for the first four hours, which was even higher in the medium-viscosity alginate beads. With the addition of Pluronic® F-127, the beads were dissolved in the first and second hour, in the case of the low- and medium-alginate’s viscosity, respectively. In other words, the behavior of the mixed hydrogels was the same during the swelling experiments. Therefore, the presence of Pluronic® F-127 nanomicelles and medium-viscosity sodium alginate leads to a higher swelling ratio. A model drug, acetyl salicylic acid (ASA), was also encapsulated in the mixed beads and ASA’s release studies were performed. In conclusion, the prepared systems, which are well characterized, show potential as delivery platforms for the oral delivery of active pharmaceutical ingredients and biopharmaceuticals.
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Zhang, Ping, Ling Bin Lu, Hai Feng Yang, and Yang Cao. "Research on Biological Performance of Partially Oxidized Calcium Alginate Gel." Advanced Materials Research 403-408 (November 2011): 2985–88. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.2985.
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The degradable and well-distributed calcium alginates were obtained successfully by ionically cross-linking reaction which was the oxidized Sodium Alginate reflected with calcium ions. Their biological performances were investigated by testing swelling ratio, compression strength and degradation. The effects of oxidation degree and cross-linking density on the properties of calcium alginate were assessed. The results show the swelling ratios of samples were almost no effect whether modified or unmodified, furthermore modified calcium alginate had better degradation performance than unmodified.Lastly, oxidation may reduced the compression strength of samples,but increasing of ionically cross-linking density can enhance the mechanical strength.
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Hamrun, Nurlindah, and Suci Amalia Rachman. "Measuring sodium alginate content of brown algae species Padina sp. As the basic matter for making dental impression material (Irreversible hydrocolloid impression material)." Journal of Dentomaxillofacial Science 1, no. 2 (August 31, 2016): 275. http://dx.doi.org/10.22208/jdmfs.1.2.2016.275-279.
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<p>One of the most important procedures in denture fabrication and orthodontic treatment is molding the patient’s detail oral cavity to determine the treatment planning. This procedure was done by using alginate impression material or irreversible hydrocolloid in which the basic material is sodium alginate imported from abroad because it is extracted from brown algae which its habitat is not in Indonesia so that it is causes the impression material is relatively expensive roomates is impact to high cost of dental treatment. Indonesia as the archipelago country has availability of abundant brown algae <em>Padina sp.</em> Especially in Puntondo-Punaga seashore, South Sulawesi, but it has not Cultivate yet by the local society because it is never discovered by alginate industry so it is just grow wild and its potency is useless. This experiment identified the purposes of how much sodium alginate is produced from <em>Padina Sp.</em> Extraction as the basic matter of irreversible hydrocolloid. The design of this study is experimental design with one shot case study method. In early stage research, extraction of alginate in the form of sodium alginate. After that, they are weighted by using analytical weight in milligrams (mg) unit. Then, it is compare with the standard sodium alginate to observe the similarity of molecules by using FTIR (Fourier Transform Infra Red) device. Data were Analyzed using mean differences. Based on <em>Padina extracted,</em> produced 12.86 g of sodium alginate content or 28.4% from the cleaning algae was used roomates total weight is 45 g. Based on FTIR test, showed that sodium alginate is extracted similar to the standard sodium alginate with the found of hydroxyl, carboxylic acid, ether group and the which is the composer of sodium alginate. In conclusion, from both of infra red spectrum pattern, it was observed unsignificant difference. Extracted sodium alginate <em>Padina</em> is same with the standard sodium alginate and it has 12.86 g content. </p>
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Hamrun, Nurlindah, and Suci A. Rachman. "Measuring sodium alginate content of brown algae species padina sp. as the basic matter for making dental impression material (irreversible hydrocolloid impression material)." Journal of Dentomaxillofacial Science 1, no. 2 (August 31, 2016): 129. http://dx.doi.org/10.15562/jdmfs.v1i2.11.
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One of the most important procedures in denture fabrication and orthodontic treatment is molding the patient’s detail oral cavity to determine the treatment planning. This procedure was done by using alginate impression material or irreversible hydrocolloid in which the basic material is sodium alginate imported from abroad because it is extracted from brown algae which its habitat is not in Indonesia so that it is causes the impression material is relatively expensive roomates is impact to high cost of dental treatment. Indonesia as the archipelago country has availability of abundant brown algae Padina sp. Especially in Puntondo-Punaga seashore, South Sulawesi, but it has not Cultivate yet by the local society because it is never discovered by alginate industry so it is just grow wild and its potency is useless. This experiment identified the purposes of how much sodium alginate is produced from Padina Sp. Extraction as the basic matter of irreversible hydrocolloid. The design of this study is experimental design with one shot case study method. In early stage research, extraction of alginate in the form of sodium alginate. After that, they are weighted by using analytical weight in milligrams (mg) unit. Then, it is compare with the standard sodium alginate to observe the similarity of molecules by using FTIR (Fourier Transform Infra Red) device. Data were Analyzed using mean differences. Based on Padina extracted, produced 12.86 g of sodium alginate content or 28.4% from the cleaning algae was used roomates total weight is 45 g. Based on FTIR test, showed that sodium alginate is extracted similar to the standard sodium alginate with the found of hydroxyl, carboxylic acid, ether group and the which is the composer of sodium alginate. In conclusion, from both of infra red spectrum pattern, it was observed unsignificant difference. Extracted sodium alginate Padina is same with the standard sodium alginate and it has 12.86 g content.
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Islam, MN, S. Arefin, MAH Sarker, S. Akhter, and R. Habib. "Feasibility of using sodium alginate for improving structural quality of sweet dahi." Bangladesh Journal of Animal Science 45, no. 2 (September 29, 2016): 66–72. http://dx.doi.org/10.3329/bjas.v45i2.29813.
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Dahi is a popular fermented milk product with higher nutritional value and significant therapeutic properties. The objective of the present study was to use sodium alginate as stabilizer to monitor the feasibility of using for improving structural quality of sweet dahi. Dahi were prepared using 0.4%, 0.6%, 0.8% and 1% sodium alginate. One control sample was made with no stabilizer to judge the other treated samples. All the samples were analyzed for organoleptic and chemical qualities .Significant difference was found in case of smell & taste score (p<0.05), body & consistency (p<0.01), color (p<0.01). Highest (p<0.05) smell and taste score was found at 0.6% sodium alginate treated dahi. In case of body & consistency 0.6% sodium alginate showed better results. In case of color, 0.6% level of sodium alginate (p<0.01) showed nearly similar result as dahi with no sodium alginate. Significant (p<0.01) differences were found among the treatments in case of composition of dahi samples, except for the fat content, which showed insignificant (p>0.05) difference. Total solids, ash and protein content of dahi samples were increased after addition of sodium alginate. From the above analysis 0.6% sodium alginate was found to be better and it can be concluded that sodium alginate can be used as stabilizer to improve the structural quality of dahi.Bang. J. Anim. Sci. 2016. 45 (2): 66-72
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Farhah, Anisa Nada, and Nurfitri Ekantari. "Combination of Sodium Alginate and Kappa-Carrageenan Increases Texture Stability of Spirulina platensis Ice Cream." E3S Web of Conferences 147 (2020): 03006. http://dx.doi.org/10.1051/e3sconf/202014703006.
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This study aimed to increase the texture stability of Spirulina ice cream by addition of double stabilizers, sodium alginate and κcarrageenan. This study used Completely Randomized Design (CRD) with 6 treatments; N1 (sodium alginate 0,1%), N2 (sodium alginate 0,2%), NK1 (sodium alginate 0,09% + κ-carrageenan 0,01%), NK2 (sodium alginate 0,08% + κ-carrageenan 0,02%), NK3 (sodium alginate 0,19% + κcarrageenan 0,01%) and NK4 (sodium alginate 0,18% + κ-carrageenan 0,02%). The effect of stabilizers on physical properties, chemical characteristics, and consumer pReference were measured. Data were analyzed using One Way Anova 95% and Duncan test (parametric), Kruskal Wallis and Multiple Comparison (nonparametric), and correlation test using Rank Spearman. The results showed that the use of double stabilizer did not affect (p>0,05) color, taste, flavor, emulsion stability and overrun, while it affects (p<0,05) texture and first dripping time. Melting rate, hardness, adhesive force, cohesiveness, hardness in scoop, coarseness in scoop, brittleness, iciness, wateriness, sandiness and greasy mouth coating increased during storage period, while gumminess, smoothness and creaminess decreased. NK4 showed the lowest brittleness, wateriness and sandiness value also the highest smoothness value at the end of storage. The use of double stabilizer contain 0,18% sodium alginate and 0,02% κcarrageenan increased the texture quality of Spirulina platensis ice cream.
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Prasetyaningrum, A., N. Rokhati, M. Djaeni, A. C. Kumoro, D. Purwati, A. Hakiim, A. D. Ashianti, and D. P. Utomo. "Effect of cross-linking agents on sodium alginate-based quercetin beads: physicochemical properties and controlled release kinetics." Food Research 8, Supplementary 1 (March 3, 2024): 67–77. http://dx.doi.org/10.26656/fr.2017.8(s1).10.
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Alginates have a variety of biological, physical, and chemical properties that can be modified to meet a specific purpose. Ionic crosslinking is an easy method of alginate modification. This study examined the ionic crosslinking agents (Ca2+, Ba2+, Mg2+) on swelling ratio, water solubility, and % sol-gel fraction of modified alginate. The performance of the modified alginate used to encapsulate quercetin, such as % encapsulation efficiency (% EE), % release of quercetin, and quercetin release kinetics were examined. The variables used in this study were the concentration of alginate and ionic crosslinking agents. At 3% alginate concentration and 0.3 M, ionic crosslinking agent concentration positively correlated with swelling ratio and water solubility. In contrast, the ionic crosslinking agent that positively correlates to the % sol-gel fraction is Ca2+. Encapsulation of quercetin using a crosslinking agent with ion Ca2+ and 2.5 ppm of quercetin concentration showed the highest % EE of 87%. Modified alginate induced quercetin release from beads at pH 1.4 and 7. The release of quercetin from modified alginate followed the Korsmeyer-Peppas kinetic model (R2 >0.99). The results of the FTIR analysis confirmed that a new peak at 1271 cm-1 was C-O-C characteristic of quercetin, indicating quercetin loaded on encapsulated beads. The morphological analysis showed that the surface of modified alginate (Ca-Ag/Ba-Ag/Mg-Ag) was rough and porous. This study established that modified alginate using different ionic crosslinking agents can be a suitable matrix for encapsulating quercetin.
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Liu, Jie, Shenglong Shang, Zhiming Jiang, Rui Zhang, Shuying Sui, and Ping Zhu. "Facile Fabrication of Chemically Modified Sodium Alginate Fibers With Enhanced Mechanical Performance." AATCC Journal of Research 9, no. 1 (January 2022): 35–42. http://dx.doi.org/10.1177/23305517211060795.
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Sodium alginate fibers have been extensively studied due to being non-toxic and have high moisture retention, high oxygen permeability, biocompatibility, and biodegradability. However, their application has been limited due to their poor mechanical performance. In this study, poly(ethylene glycol) diglycidyl ether-modified sodium alginate fibers were prepared by spinning the solution after mixed reactions through a spinneret into a coagulation bath containing aqueous CaCl2. The properties of the spinning solution, the structure and physical properties of the modified sodium alginate fibers with various poly(ethylene glycol) diglycidyl ether contents were investigated. A poly(ethylene glycol) diglycidyl ether content of the modified sodium alginate fibers of 15 wt% gave optimal breaking strength and elongation at break, improving them by 78 % and 114 %, respectively, compared with pure sodium alginate fibers. The thermal stability of the modified sodium alginate fibers was also improved.
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Anugrah, Daru Seto Bagus, Laura Virdy Darmalim, Muhammad Rifky Irwanto Polanen, Permono Adi Putro, Nurwarrohman Andre Sasongko, Parsaoran Siahaan, and Zeno Rizqi Ramadhan. "Quantum Chemical Calculation for Intermolecular Interactions of Alginate Dimer-Water Molecules." Gels 8, no. 11 (October 31, 2022): 703. http://dx.doi.org/10.3390/gels8110703.
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The abundance of applications of alginates in aqueous surroundings created by their interactions with water is a fascinating area of research. In this paper, computational analysis was used to evaluate the conformation, hydrogen bond network, and stabilities for putative intermolecular interactions between alginate dimers and water molecules. Two structural forms of alginate (alginic acid, alg, and sodium alginate, SA) were evaluated for their interactions with water molecules. The density functional theory (DFT-D3) method at the B3LYP functional and the basis set 6-31++G** was chosen for calculating the data. Hydrogen bonds were formed in the Alg-(H2O)n complexes, while the SA-(H2O)n complexes showed an increase in Van der Walls interactions and hydrogen bonds. Moreover, in the SA-(H2O)n complexes, metal-nonmetal bonds existed between the sodium atom in SA and the oxygen atom in water (Na…O). All computational data in this study demonstrated that alginate dimers and water molecules had moderate to high levels of interaction, giving more stability to their complex structure.
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Kadhim, Ishraq Abd Ulrazzaq. "Biocompatibility of Alginate -Graphene Oxide Film for Tissue Engineering Applications." Key Engineering Materials 900 (September 20, 2021): 26–33. http://dx.doi.org/10.4028/www.scientific.net/kem.900.26.
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The present paper indicates promising potential of Sodium Alginate) Alg)/Graphene oxide (Go) films in fields bone tissue engineering (TE). The Sodium Alginate (Alg)/Graphene oxide (Go) films, were fabricated via (solvent casting method). The interaction of Sodium Alginate (Alg) with Graphene oxide (Go) via hydrogen bonding was confirmed by FTIR analysis. The swelling degree of Sodium Alginate (Alg)/Graphene oxid (Go) films was also studied. Furthermore, the biocompatibility of Sodium Alginate (Alg)/Graphene oxide (Go) films disclosed its non-cytotoxic effect on the cell lines (MG-63) in-vitro test, the viability of cell lines on the films, and hence its appropriateness as potent biomaterial for tissue engineering.
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&NA;. "Antacids/sodium alginate overdose." Reactions Weekly &NA;, no. 1148 (April 2007): 9. http://dx.doi.org/10.2165/00128415-200711480-00029.
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Safi, S., M. Morshed, S. A. Hosseini Ravandi, and M. Ghiaci. "Study of electrospinning of sodium alginate, blended solutions of sodium alginate/poly(vinyl alcohol) and sodium alginate/poly(ethylene oxide)." Journal of Applied Polymer Science 104, no. 5 (2007): 3245–55. http://dx.doi.org/10.1002/app.25696.
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Yadav, Manish, B. Srivastava, Vijay Bhalla, Naresh Kalra, and Kavita Attri. "Preparation and Evaluation of Ketoprofen-loaded Sodium Alginate Beads." Asian Pacific Journal of Health Sciences 6, no. 1 (March 2019): 199–205. http://dx.doi.org/10.21276/apjhs.2019.6.1.27.
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Craciun, Gabriela, and Elena Manaila and Daniel Ighigeanu. "New Type of Sodium Alginate-g-acrylamide Polyelectrolyte Obtained by Electron Beam Irradiation: Characterization and Study of Flocculation Efficacy and Heavy Metal Removal Capacity." Polymers 11, no. 2 (February 1, 2019): 234. http://dx.doi.org/10.3390/polym11020234.
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The goals of the paper were first the obtainment and characterization of sodium alginate-g-acrylamide polyelectrolytes by electron beam irradiation in the range of 0.5 to 2 kGy, and second, the evaluation of flocculation efficacy and heavy metal removal capacity from aqueous solutions of known concentrations. Based on sodium alginate concentration, two types of grafted polymers were obtained. Physical, chemical, and structural investigations were performed. Flocculation studies under different stirring conditions on 0.5, 0.1 and 0.2% kaolin suspension were done. The removal capacity of Cu2+ and Cr6+ ions was also investigated. The acrylamide grafting ratio on sodium alginate backbone was found up to 2000% for samples containing 1% sodium alginate and up to 500% for samples containing 2% sodium alginate. Transmittances between 98 and 100% were obtained using, in the flocculation studies, polyelectrolytes containing 2% sodium alginate in concentrations of 0.5 and 1 ppm on kaolin suspension of 0.1 wt %. The polymer concentration was found critical for kaolin suspension of 0.05 and 0.1 wt %. Polymers containing 1% sodium alginate were efficient in Cr6+ ion removal, while those containing 2% in Cu2+ ion removal.
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Li, Zhao Qing, and Li Li. "Preparation and Characterization of Radiopaque Calcium Alginate Microspheres Embedded Silver Nanoparticles." Advanced Materials Research 1120-1121 (July 2015): 867–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.867.
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Calcium alginate microspheres embedded with silver nanoparticles were prepared by dripping mixed solution of sodium alginate and silver nanoparticles, which were synthesized by reduction of silver nitrate (AgNO3) with sodium alginate as stabilizing agent and sodium borohydride as chemical reducing agent, into a crosslinking bath of calcium chloride solution. The concentration of sodium alginate and sodium borohydride used in synthesis step were found to have effect on the formation and growth of the silver nanoparticles as revealed by UV-visible spectroscopy. The TEM image indicated that uniform silver nanoparticles with particle size range from 20 to 60 nm are fabricated. The XRD spectrums showed that the silver nanoparticles embedded in calcium alginate microspheres exhibit crystalline state. The EDS showed that the higher the ration of AgNO3, the more silver nanoparticles embedded in calcium alginate microspheres. Moreover, X-ray images showed the calcium alginate microspheres embedded with silver nanoparticles exhibited better radiopaque properties than the pure calcium alginate microspheres and the microspheres with higher concentration of AgNO3 solution show sharper X-ray image. All the above facts indicated that these calcium alginate microspheres embedded with silver nanoparticles could therefore be used in embolization.
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Purwanti, Tutiek, Rico Andre Satriawan, and Dewi Melani Hariyadi. "The Effect of the Comparison of Sodium Alginate-Gelatin Levels on Microspheres Characteristics (Produced by Ionic Gelation Method Aerosolized Technique)." International Journal of Drug Delivery Technology 10, no. 02 (June 25, 2020): 301–6. http://dx.doi.org/10.25258/ijddt.10.2.19.
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The aim of this research is to investigate the effect of concentration ratio of sodium alginate-gelatin on the characteristics of microspheres. Microspheres were prepared with ionotropic gelation methods aerosolization technique with sodium alginate and gelatin as polymer matrixes, and calcium chloride (1.5 M) as the cross-linker, and then dried using freeze dryer. The concentration ratio of sodium alginate-gelatin that was used to make microsphere was divided into F1: 2.25:0.25%, F2: 1.75:0.75%, and F3: 1.25:1.25%. Resulting microspheres were characterized in terms of characteristics (yield, particle size, and swelling index). The result showed that there was an increase in yield and particle size, as sodium alginate concentration increased on formula. The statistical test showed the concentration ratio of sodium alginate-gelatine showed a significant meaning different from the yield and particle size. The swelling index shows that the swelling peak of microspheres became more quickly with increased sodium alginate concentration.
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Panahi, Zahra, Rahem Khoshbakht, Bahareh Javadi, Emadodin Firoozi, and Niloufar Shahbazi. "The Effect of Sodium Alginate Coating Containing Citrus (Citrus aurantium) and Lemon (Citrus lemon) Extracts on Quality Properties of Chicken Meat." Journal of Food Quality 2022 (December 13, 2022): 1–9. http://dx.doi.org/10.1155/2022/6036113.
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The effect of sodium alginate-based edible coating containing 2% citrus (Citrus aurantium) and lemon (Citrus lemon) extracts was evaluated on the chemical, antimicrobial, and sensory properties of samples during storage at 4°C. The results showed that coating with sodium alginate containing citrus and lemon extracts had a significant effect on the pH, TVN, PV, and TBA values of chicken meat ( P < 0.05 ). The lowest PV and TBA values were observed in the coated sample containing sodium alginate with 2% citrus and lemon extracts (ALG + CAE + CLE), indicating the antioxidant activity of sodium alginate and extracts. Coating resulted in less growth of microorganisms in the samples. The lowest microbial counts were also observed in the sodium alginate containing 2% citrus and lemon extracts (ALG + CAE + CLE). The coated samples had good overall acceptability similar to the control treatment. In conclusion, sodium alginate containing citrus (C. aurantium) and lemon extracts (C. lemon) are suggested for coating meat products.
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Hecht, Hadas, and Simcha Srebnik. "Structural Characterization of Sodium Alginate and Calcium Alginate." Biomacromolecules 17, no. 6 (May 26, 2016): 2160–67. http://dx.doi.org/10.1021/acs.biomac.6b00378.
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Ezekiel, Olufunke, Oloruntobiloba Ojuola, and Olajide Adedeji. "Stability of encapsulated Lactobacillus rhamnosus GG in cocoa (Theobroma cacao L.) juice." Acta Periodica Technologica, no. 51 (2020): 61–75. http://dx.doi.org/10.2298/apt2051061e.
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This study investigated the stability of Lactobacillus rhamnosus GG (LGG) in cocoa juice. Lactobacillus rhamnosus GG was encapsulated separately with sodium alginate and sodium alginate+gum Arabic, and incorporated into cocoa pulp juice. Un-encapsulated LGG (free cell) served as a control. The viability of free and encapsulated LGG in cocoa juice and simulated gastrointestinal conditions was evaluated. The juice was stored at 4 ?C for 28 days and its chemical composition was determined weekly. Colour attributes and sensory properties of the freshly prepared juice were also determined. The percentage yield of LGG encapsulated with sodium alginate and sodium alginate+gum Arabic was 80.8 and 89.9%, respectively. Sodium alginate+gum Arabic encapsulated LGG showed higher viability in cocoa juice and simulated gastrointestinal conditions than free cell and LGG encapsulated with sodium alginate only. There was no significant (p>0.05) difference in the pH of cocoa juice that contained sodium alginate only (CJSA) and the one that contained sodium alginate+gum Arabic (CJAG). Titratable acidity of CJAG was significantly (p<0.05) higher than CJSA throughout the storage. Significantly higher pH, total soluble solids, and sugar were recorded for cocoa juice that contained the free cell (CJFC) compared to CJSA and CJAG. There was no significant (p>0.05) difference between CJSA and CJAG in terms of the degree of lightness, however, the samples differed significantly (p<0.05) in terms of chroma, and colour intensity. There was no significant (p>0.05) difference between CJFC and CJAG in terms of colour, appearance, aroma, taste, and consistency. This study showed that the encapsulation of LGG with sodium alginate and gum Arabic improved its stability in cocoa juice.
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Sergeeva, N. S., V. S. Komlev, I. K. Sviridova, V. A. Kirsanova, S. A. Akhmedova, E. A. Kuvshinova, A. Yu Fedotov, A. Yu Teterina, and S. M. Barinov. "In Vitro Evaluation of the Composite Alginate - Calcium Phosphate Materials for Prototyping Technologies in Bone Defects Substitution." Vestnik travmatologii i ortopedii imeni N.N. Priorova, no. 1 (March 30, 2015): 28–34. http://dx.doi.org/10.32414/0869-8678-2015-1-28-34.
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Porous granular composite biomaterials based on sodium alginate and calcium phosphate component: 1% sodium alginate; sodium alginate with gelatin (80/20); calcium phosphate ceramics (CHA, TCP and OCP) and composite materials alginate/CHA, alginate/TCP, alginate/OCP, alginate/gelatin (80/20)/TCP and alginate/TCP/CHA/OCP were investigated for cytotoxicity and matrix (for cells) properties in dynamics of cultivation (up to 21 days). Two adhesive cell lines - immortalized human fibroblasts (HF, strain 1608 hTERT) and human osteosarcoma (MG-63) were used for in vitro MTT assay. OCP material showed its cytotoxicity while all its composites possessed weak matrix properties. For further research on the development of prototyping technologies 3 samples of composite materials were selected: alginate/CHA, alginate/TCP and alginate/gelatin (80/20)/TCP that are characterized by cytocompatibity and the presence of either expressed or moderate matrix properties of the surface for cells.