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Academic literature on the topic 'Sodium alginate'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 June 2025

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Journal articles on the topic "Sodium alginate"

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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 (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 (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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Wilandani Sabilla, Arlina Prima Putri, and Farendina Suarantika. "Modifikasi Natrium Alginat dengan Metode Oksidasi Periodat." Bandung Conference Series: Pharmacy 4, no. 2 (2024): 426–32. http://dx.doi.org/10.29313/bcsp.v4i2.14241.

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Abstract. This research aims to modify sodium alginate using the periodate oxidation method. The alginate used is not easily biodegradable, so oxidation is carried out with sodium metaperiodate to facilitate biodegradation and produce new functional groups. With the presence of new functional groups in alginate, hydrogels can be formed using type B gelatin and BaCl2. Alginate was successfully synthesized because an oxidation degree of 3% was obtained and the Fourier Transform Infra Red Attenuated Total Reflectance (FTIR-ATR) results showed a band of 1720 cm-1 which indicated a change in alginate to Alginate Dialdehyde (ADA). Abstrak. Penelitian ini bertujuan untuk modifikasi natrium alginat dengan metode oksidasi periodat. Alginat yang digunakan tidak mudah terbiodegradasi, sehingga dilakukan oksidasi dengan natrium metaperiodat untuk mempermudah biodegradasi dan menghasilkan gugus fungsi baru. Dengan adanya gugus fungsi baru pada alginat maka hidrogel dapat dibentuk dengan menggunakan gelatin tipe B dan BaCl2. Alginat berhasil disintesis karena diperoleh derajat oksidasi 3% dan hasil Fourier Transform Infra Red Attenuated Total Reflectance (FTIR-ATR) menunjukkan pita 1720 cm-1 yang menunjukkan adanya perubahan alginat menjadi Alginat Dialdehida (ADA).

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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 (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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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 (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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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 (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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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 (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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Adamiak, Katarzyna, and Alina Sionkowska. "State of Innovation in Alginate-Based Materials." Marine Drugs 21, no. 6 (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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Yudiati, Ervia, and Alim Isnansetyo. "Characterizing the Three Different Alginate Type of Sargassum siliquosum." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 22, no. 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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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 (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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Dissertations / Theses on the topic "Sodium alginate"

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Richardson, J. Craig. "Bioadhesive sodium alginate suspensions as oesophageal protectants." Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410337.

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Sachetto, João Paulo. "Efeito do tratamento térmico de STx-1b-Li+ na condutividade de filmes de STx-1b-Li+ /Alginato de sódio." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-06052016-084651/.

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Neste trabalho foram estudados os efeitos causados pelo tratamento térmico na argila STx-1b-Li+ na condutividade de filmes argila/alginato de sódio. O argilomineral STx-1b foi submetido à substituição isomórfica do cátion Na+ por Li+ e posteriormente ao tratamento térmico em diferentes temperaturas. As argilas STx-1b-Li+ não tratada e tratada termicamente foram caracterizada por difração de raios-X (DRX) e termogravimetria (TG). As curvas TG mostraram que o argilomineral STx-1b-Li+ apresentou três perdas de massa que podem ser atribuídas à água adsorvida na argila, a água de hidratação dos íons Li+ e a água estrutural da argila. Para as argilas STx-1b-Li+ tratadas termicamente não foi observado a perda de massa associada à água quimicamente ligada aos contra-íons Li+. Estes resultados estão em concordância com os obtidos por DRX, onde observou-se uma diminuição no espaçamento interlamelar nas argilas tratadas termicamente. Em adição, foram preparados filmes de alginato de sódio com as argilas STx-1b-Li+ não tratada e tratada termicamente e estes foram caracterizados por calorimetria exploratória diferencia (DSC) e espectroscopia de impedância eletroquímica (EIE). As curvas DSC mostraram um aumento na temperatura de transição vítrea (Tg) dos filmes com o aumento da temperatura utilizada no tratamento das argilas. Este aumento nos valores de Tg é um indicativo que a mobilidade das cadeias diminuiu nos filmes polímero/argila que contém argilas tratadas em temperaturas mais elevadas. A espectroscopia de impedância eletroquímica (EIE) foi usada para avaliar-se a condutividade iônica dos filmes. Os resultados indicaram que os filmes contendo argilas que foram tratadas com temperaturas mais altas apresentaram menor condutividade.<br>In this work the effects caused by the heat treatment in STx-1b-Li+ clay on the conductivity of sodium alginate/clay were studied. The clay mineral STx-1b was submitted to isomorphous substitution of the Na+ for Li+ cation and subsequently to heat treatment at different temperatures. The STx-1b-Li+ clays untreated and heats treated were characterized by X-ray diffraction (XRD) and Thermogravimetric Analysis (TG). The TG curve showed that the clay mineral STL-1b-Li+ had three mass losses which can be attributed to adsorbed water in the clay, the water of hydration of the Li+ ions and structural clay water. To STx-1b-Li+ clays heat treated there were no mass loss associated to the water chemically bound to Li+ counter ions. These results are in agreement with those obtained by XRD, which it was observed a decrease in interlayer spacing in the heat treated clay. In addition, they were prepared sodium alginate films with STx-1b-Li+ clays untreated and heat treated and these films were characterized by Differential Scanning Calorimetry (DSC) and Electrochemical Impedance Spectroscopy (EIS). DSC curves showed an increase in glass transition temperature (Tg) of the films with temperature increasing used in the treatment of clays. This increase in Tg value is an indicative that the mobility of the chains had decrease in the polymer/clay films which contains heat treated clays at higher temperatures. The electrochemical impedance spectroscopy (EIS) was used to evaluate the ionic conductivity of the films. The results indicate that films containing clays which have been treated at higher temperatures had lower conductivity.

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Veski, Peep. "Use of hard gelatin capsules and sodium alginates in peroral prolonged-release formulations /." Helsinki, 1994. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=006530628&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Hodsdon, Alison Claire. "Xanthan gum and sodium alginate as sustained-release carriers in hydrophilic matrix tablets." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259859.

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Asilonu, Ernest Ozuruonye. "The effects of oligosaccharides on production of secondary metabolites in microbial cultures." Thesis, University of Westminster, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322994.

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Abbah, Sunny Akogwu. "Towards an injectable bone graft substitute: evaluation of sodium alginate microcapsules for bone tissueengineering." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B39329951.

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Her, Chithdavone. "Formulation d’un gel muco-adhésif contenant des nanocapsules lipidiques de curcumine en vue d’une administration par voie orale." Thesis, Angers, 2018. http://www.theses.fr/2018ANGE0061.

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Ces travaux de thèse ont porté sur la formulation de gels muco-adhésifs piégeant des nanocapsules lipidiques (LNCs) de curcumine. L’objectif est d’améliorer la biodisponibilité de la curcumine en la solubilisant au sein des LNCs piégées dans un gel, utilisées pour augmenter l’absorption intestinale. La première étape du travail a permis d’identifier le Transcutol®HP et le Kolliphor®HS15 comme excipients compatibles avec la préparation des LNCs tout en assurant une solubilisation suffisante de la curcumine. Deux formulations de LNCs de curcumine ont été proposées : l’une avec le Transcutol®HP/Labrafac®WL1349/Labrafil® M1944CS et l’autre avec le Captex®8000 en tant que constituants du cœur des particules. La formulation avec le Transcutol®HP a été optimisée pour obtenir des particules de 63nm avec une distribution étroite (PdI=0.17) et un rendement d’encapsulation de 92%. Avec le Captex®8000 des particules de 57nm avec un PdI<0.1 ont été obtenues. En revanche, pour les deux formulations, l’étape de purification constitue une étape critique non résolue. Un gel d’alginate de sodium, de géométrie cylindrique compatible avec une insertion dans des gélules, a également été développé. La capacité des gels à absorber l’eau dans différents milieux biomimétiques a été suivie dans le temps in vitro. Une différence de comportement entre les gels lyophilisés et les gels non lyophilisés a été mise en évidence. Enfin, l’encapsulation de deux fluorochromes dans les LNCs a permis de suivre l’intégrité des LNCs lors de la formulation des gels par la technique de transfert d'énergie par résonance de type Förster (FRET). Les LNCs restent intactes pendant l’étape de gélification et la capacité du gel à piéger les LNCs a été démontrée<br>The aim of this phD work was to develop a muco-adhesive gel entrapping curcumin loaded lipid nanocapsules (LNCs). The objective was to improve the bioavailability of curcumin by its solubilization into LNCs entrapped into a gel to increase intestinal absorption. Firstly, Transcutol@HP and Kolliphor@ HS15 were identified as suitable excipients to formulate LNCs With a sufficient solubility of curcumin. Two formulations of curcumin LNCs were M1944CS or Captex@8000, which form the core of particles. The TranscutoPHP formulation was optimized to obtain 63nm particles With a narrow distribution (Pdl=0.17) and 920/0 of encapsulation efficiency. Particles With a mean diameter of 57nm and Pdl

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Abbah, Sunny Akogwu. "Towards an injectable bone graft substitute evaluation of sodium alginate microcapsules for bone tissue engineering /." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B39329951.

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麻理, 的場, and Mari Matoba. "Application of sodium alginate as a medical material aimed to prevent air leak and adhesion." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13115605/?lang=0, 2019. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13115605/?lang=0.

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手術後の呼吸器からの空気漏出（エアリーク）と腹部及び胸部癒着はそれぞれ、未だに臨床にて大きな課題である。本研究では、安全性に優れた植物性多糖類のアルギン酸ナトリウムに着目し、ゲルやスポンジの材形に加工した。これをPGA不織布と併用して新規エアリーク防止材を開発した。この新規材料は、エアリーク防止だけでなく癒着防止に対しても優れた効果を発揮した。将来的に、この新規材料は、従来材料よりも優れた医療材料として臨床応用されることが期待できると考えられる。<br>Sodium alginate is polysaccharide extracted from seaweed and used as a biomaterial clinically. The alginate in this study was used as gel- or sponge-formed and combined with a polyglycolic acid (PGA) mesh, a useful biomaterial clinically; namely this combination was the new sealing material. The purpose of this study was to prevent pulmonary air leak without inducing adhesion. This study was composed of the four animal experiments; the first half of them was about preventing air leak and the latter was about preventing adhesion. All experiments showed that new sealing material was superior to the conventional treatments. Therefore the new sealing material was expected to be applied clinically to a sealing material, which also has an anti-adhesive effect.<br>博士(理学)<br>Doctor of Philosophy in Science<br>同志社大学<br>Doshisha University

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LALWANI, DARSHAN NARENDRA. "An oral dosage form of ceftriaxone sodium using enteric coated sustained release calcium alginate beads." University of Toledo Health Science Campus / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=mco1430403186.

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Books on the topic "Sodium alginate"

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Ahmad, Ikram, Abdullah M. Asiri, Awais Ahmad, Tahseen Kamal, and Sobia Tabassum. Sodium Alginate-Based Nanomaterials for Wastewater Treatment. Elsevier, 2022.

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Ahmad, Ikram, Abdullah M. Asiri, Awais Ahmad, Tahseen Kamal, and Sobia Tabassum. Sodium Alginate-Based Nanomaterials for Wastewater Treatment. Elsevier, 2022.

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Gill, Hardeepak (Happy) Singh. Stimulated jet break-up for production of uniform size microgel beads from cross linked sodium alginate solutions. 1996.

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Gill, Hardeepak (Happy) Singh. Stimulated jet break-up for production of uniform size microgel beads from cross linked sodium alginate solutions. 1996.

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Book chapters on the topic "Sodium alginate"

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Bährle-Rapp, Marina. "Sodium/TEA-Undecylenoyl Alginate." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_9757.

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Cheaburu-Yilmaz, Catalina N., Cornelia Vasile, Oana-Nicoleta Ciocoiu, and Georgios Staikos. "Sodium Alginate Grafted with Poly(N -isopropylacrylamide)." In Temperature-Responsive Polymers. John Wiley & Sons Ltd, 2018. http://dx.doi.org/10.1002/9781119157830.ch5.

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Uzun, Muhammet, Ani Diana Kuyumcu, and Oguzhan Gunduz. "3D-Printed Lanolin-Based Sodium Alginate Wound Dressings." In Engineering Materials for Stem Cell Regeneration. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4420-7_9.

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Richardson, J. C., P. W. Dettmar, F. C. Hampson, and C. D. Melia. "The bioadhesive and swelling characteristics of sodium alginate suspensions." In Special Publications. Royal Society of Chemistry, 2009. http://dx.doi.org/10.1039/9781847551214-00075.

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Boyd, Matthew J., John R. Mitchell, Frank C. Hampson, Ian G. Jolliffe, Peter W. Dettmar, and Colin D. Melia. "Phase separation behaviour in xanthan and sodium alginate mixtures." In Special Publications. Royal Society of Chemistry, 2009. http://dx.doi.org/10.1039/9781847551214-00262.

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Ma, Shengjun, Xiongfei Zheng, Cheng Zhang, Heran Wang, and Hongyi Li. "Gelatin-Sodium Alginate Hydrogel Processing by Low-Temperature 3D Printing." In Intelligent Robotics and Applications. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-22876-1_45.

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Venugopal, Gopikrishnan, Manigundan Kaari, Abirami Baskaran, and Radhakrishnan Manikkam. "Immobilization of Actinobacterial Cells: Sodium Alginate and Calcium Chloride Method." In Methods in Actinobacteriology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-1728-1_73.

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Inozemtcev, S. S., and D. T. Toan. "Sodium Alginate Application in Self-healing Technology for Asphalt Concrete." In Lecture Notes in Civil Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75182-1_9.

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Mary, Aashli, S. Giridhar Reddy, B. Sivakumar, and Sanga Kugabalasooriar. "Release Mechanisms of Montelukast Sodium from Transdermal Films Based on Sodium Alginate and Lignosulphonic Acid." In Advances in Materials Science and Technology. CRC Press, 2025. https://doi.org/10.1201/9781003664277-38.

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Temurayak, Ayberk, and Tugba Eskisar. "Clay Soil Stabilization Using Xanthan Gum and Sodium Alginate as Biopolymers." In Lecture Notes in Civil Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-20172-1_12.

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Conference papers on the topic "Sodium alginate"

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Vasiļjeva, Svetlana, Roberts Krumiņš, Gaļina Smirnova, et al. "Optimization of the production of sodium alginate derivatives." In 82nd International Scientific Conference of the University of Latvia. University of Latvia Press, 2024. https://doi.org/10.22364/iarb.2024.06.

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A natural polysaccharide sodium alginate, a salt of alginic acid, is widely used as a wetting and thickening agent in food, pharmaceuticals, cosmetics and other fields. Interest in the practical use of the derivatives of sodium alginate poses the problem of their convenient and cost-effective production. Two methods applied for the synthesis of uronic acids from sodium alginate were studied. The previously created method of Prof. A. Mirshafiey (Mirshafiey & Lalander, 2024) has been tested in the laboratory. The method is based on the hydrolysis of sodium alginate with sulfuric acid followed by the separation of D-mannuronic acid (MA) and L-guluronic acid (GA), that included pH regulation and precipitation by centrifugation and quite long-time drying process. However, the method is rather complex, time-consuming and energy-intensive. To simplify and reduce the cost of uronic acids production, it was necessary to optimize the technology. Optimized in the laboratory method kept the previous step of sodium alginate hydrolysis unchanged. Further, the method differed in that the MA and GA mixture was precipitated, washed and filtered on membrane filter without prior separation. The obtained MA + GA gel composition may be used without drying in the creation of new innovative products for human health. The optimization of the method has greatly simplified the synthesis of sodium alginate derivatives and makes it possible to increase the economic efficiency of the process.

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Khaydarova, Sadoqat Salimjanovna, Sevinch Qurolovna Siddikova, and Alisher Khamidovich Khaitbaev. "Extraction of Sodium Alginate from Charophyceae Algae." In International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2022. http://dx.doi.org/10.3390/ecsoc-26-13639.

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Yan, Jingyuan, Hemanth Gudapati, Yong Huang, and Changxue Xu. "Effect of Sodium Alginate Concentration During Laser-Assisted Printing of Alginate Tubes." In ASME/ISCIE 2012 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/isfa2012-7253.

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For the free-form fabrication of various tissue constructs, three-dimensional (3D) additive printing technology has emerged as a promising approach for organ fabrication. This study aims to print a tube structure using a laser-assisted orifice-free printing technique and further investigate the effect of sodium alginate concentration on the tube wall thickness. Alginate tubes have been successfully printed. It is found that highly viscous materials can be laser printed into well-defined tube structures. A higher concentration solution such as the 8% sodium alginate solution leads to a thin wall, meaning a better resolution. Imaging analysis also illustrates that higher concentration solutions help develop smooth, slim jets upon the incidence of laser pulse.

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Tripadus, V., J. M. Zanotti, M. Statescu, et al. "Diffusion motions in hydrated sodium alginate by QENS." In ORGANIZED BY THE HELLENIC PHYSICAL SOCIETY WITH THE COOPERATION OF THE PHYSICS DEPARTMENTS OF GREEK UNIVERSITIES: 7th International Conference of the Balkan Physical Union. AIP, 2010. http://dx.doi.org/10.1063/1.3322299.

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Fatehi, Hadi, Maysam Bahmani, and Ali Noorzad. "Strengthening of Dune Sand with Sodium Alginate Biopolymer." In Eighth International Conference on Case Histories in Geotechnical Engineering. American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482117.015.

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Sobodosh, Natalia, and Andriy Bania. "Aluminum Alloy Corrosion Inhibition by Sodium Alginate in 0.1% NaCl Solution." In International Young Scientists Conference on Materials Science and Surface Engineering. Karpenko Physico-Mechanical Institute of the NAS of Ukraine, 2023. http://dx.doi.org/10.15407/msse2023.159.

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The high efficiency of the environmentally safe polysaccharide sodium alginate as an inhibitor of aluminum alloy corrosion in a 0.1% NaCl solution was established. The protective action of the alginate consists in inhibiting the cathodic reaction of electrochemical corrosion due to the formation of an organic protective film on the surface of intermetallic inclusions of the alloy.

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Santi, Claudio, Daniela Coppetta, Stefano Santoro, et al. "NMR Analysis of Non Hydrolyzed Samples of Sodium Alginate." In The 12th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2008. http://dx.doi.org/10.3390/ecsoc-12-01268.

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Summonte, C., P. Maccagnani, A. Desalvo, et al. "Gold Nanoparticles on Sodium Alginate: Simulation of Optical Properties." In 20th Italian National Conference on Photonic Technologies (Fotonica 2018). Institution of Engineering and Technology, 2018. http://dx.doi.org/10.1049/cp.2018.1637.

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Pamlényi, Krisztián, Géza Regdon, Dániel Nemes, Ildikó Bácskay, and Katalin Kristó. "Stability and permeability properties of sodium alginate buccal films." In IV. Symposium of Young Researchers on Pharmaceutical Technology,Biotechnology and Regulatory Science. Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Faculty of Pharmacy, 2022. http://dx.doi.org/10.14232/syrptbrs.2022.26.

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Guerrero, Rodel D., Imee Kassandra E. Cacho, Dan Michael A. Asequia, and Joshua Emmanuel L. Hugo. "Desorption of Lead Ions from Used Sodium Alginate-Hydroxypropyl Cellulose Adsorbent Beads." In 7th GoGreen Summit 2021. Technoarete, 2021. http://dx.doi.org/10.36647/978-93-92106-02-6.7.

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Efficient removal of adsorbed lead ions from the sodium alginate-hydroxypropyl cellulose beads was necessary to guarantee their long-term use for repeated adsorption-desorption cycles. In this study, the desorption characteristics of previously adsorbed lead ions on sodium alginate-hydroxypropyl (SA-HPC) cellulose adsorbent beads were tested using various eluents such as sulfuric acid and ethylenediaminetetraacetic acid (EDTA). SA-HPC adsorption beads were produced using 3:1 ratio of sodium alginate to hydroxypropyl cellulose via ionotropic gelation. Generally, using H2SO4 as eluent maintained an exceptional adsorption efficiency throughout in each cycle, but showed a weak desorption efficiency performance. The desorption efficiency using 0.1M EDTA, on the other hand, was found to be the most effective but resulted to the beads disintegration after the first cycle.

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Reports on the topic "Sodium alginate"

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Yoncheva, Krassimira. Benefits and Perspectives of Nanoparticles Based on Chitosan and Sodium Alginate. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.03.01.

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Shpigel, Muki, Allen Place, William Koven, Oded (Odi) Zmora, Sheenan Harpaz, and Mordechai Harel. Development of Sodium Alginate Encapsulation of Diatom Concentrates as a Nutrient Delivery System to Enhance Growth and Survival of Post-Larvae Abalone. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7586480.bard.

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The major bottlenecks in rearing the highly priced gastropod abalone (Haliotis spp.) are the slow growth rate and the high mortality during the first 8 to 12 weeks following metamorphosis and settling. The most likely reason flor these problems is related to nutritional deficiencies in the diatom diet on which the post larvae (PL) feed almost exclusively in captivity. Higher survival and improved growth rate will reduce the considerable expense of hatchery-nursery resisdence time and thereflore the production costs. BARD supported our research for one year only and the support was given to us in order to prove that "(1) Abalone PL feed on encapsulated diatoms, and (2) heterotrophic diatoms can be mass produced." In the course of this year we have developed a novel nutrient delivery system specifically designed to enhance growth and survival of post-larval abalone. This approach is based on the sodium-alginate encapsulation of heterotrophically grown diatoms or diatom extracts, including appetite-stimulating factors. Diatom species that attract the PL and promote the highest growth and survival have been identified. These were also tested by incorporating them (either intact cells or as cell extracts) into a sodium-alginate matrix while comparing the growth to that achieved when using diatoms (singel sp. or as a mixture). A number of potential chemoattractants to act as appetite-stimulating factors for abalone PL have been tested. Preliminary results show that the incorporation of the amino acid methionine at a level of 10-3M to the sodim alginate matrix leads to a marked enhancement of growth. The results ol these studies provided basic knowledge on the growth of abalone and showed that it is possible to obtain, on a regular basis, survival rates exceeding 10% for this stage. Prior to this study the survival rates ranged between 2-4%, less than half of the values achieved today. Several diatom species originated from the National Center for Mariculture (Nitzchia laevis, Navicula lenzi, Amphora T3, and Navicula tennerima) and Cylindrotheca fusiformis (2083, 2084, 2085, 2086 and 2087 UTEX strains, Austin TX) were tested for heterotrophic growth. Axenic colonies were initially obtained and following intensive selection cycles and mutagenesis treatments, Amphora T3, Navicula tennerima and Cylindrotheca fusiformis (2083 UTEX strain) were capable of growing under heterotrophic conditions and to sustain highly enriched mediums. A highly efficient selection procedure as well as cost effective matrix of media components were developed and optimized. Glucose was identified as the best carbon source for all diatom strains. Doubling times ranging from 20-40 h were observed, and stable heterotroph cultures at a densities range of 103-104 were achieved. Although current growth rates are not yet sufficient for full economical fermentation, we estimate that further selections and mutagenesis treatments cycles should result in much faster growing colonies suitable for a fermentor scale-up. As rightfully pointed out by one of the reviewers, "There would be no point in assessing the optimum levels of dietary inclusions into micro-capsules, if the post-larvae cannot be induced to consume those capsules in the first place." We believe that the results of the first year of research provide a foundationfor the continuation of this research following the objectives put forth in the original proposal. Future work should concentrate on the optimization of incorporation of intact cells and cell extracts of the developed heterotrophic strains in the alginate matrix, as well as improving this delivery system by including liposomes and chemoattractants to ensure food consumption and enhanced growth.

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