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Articoli di riviste sul tema "Alginate"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

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

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2

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 p

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3

Abourehab, Mohammad A. S., Rahul R. Rajendran, Anshul Singh, et al. "Alginate as a Promising Biopolymer in Drug Delivery and Wound Healing: A Review of the State-of-the-Art." International Journal of Molecular Sciences 23, no. 16 (2022): 9035. http://dx.doi.org/10.3390/ijms23169035.

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Biopolymeric nanoparticulate systems hold favorable carrier properties for active delivery. The enhancement in the research interest in alginate formulations in biomedical and pharmaceutical research, owing to its biodegradable, biocompatible, and bioadhesive characteristics, reiterates its future use as an efficient drug delivery matrix. Alginates, obtained from natural sources, are the colloidal polysaccharide group, which are water-soluble, non-toxic, and non-irritant. These are linear copolymeric blocks of α-(1→4)-linked l-guluronic acid (G) and β-(1→4)-linked d-mannuronic acid (M) residue

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4

Ochbaum, Guy, Maya Davidovich-Pinhas, and Ronit Bitton. "Tuning the mechanical properties of alginate–peptide hydrogels." Soft Matter 14, no. 21 (2018): 4364–73. http://dx.doi.org/10.1039/c8sm00059j.

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Covalent bonding peptides to alginates is routinely used to tailor alginate's biofunctionality. Here, we investigate the possibility of tuning the mechanical properties of alginate–peptide gels by altering the sequence of the covalently bound peptide.

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5

Colin, Camille, Emma Akpo, Aurélie Perrin, David Cornu, and Julien Cambedouzou. "Encapsulation in Alginates Hydrogels and Controlled Release: An Overview." Molecules 29, no. 11 (2024): 2515. http://dx.doi.org/10.3390/molecules29112515.

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This review aims to gather the current state of the art on the encapsulation methods using alginate as the main polymeric material in order to produce hydrogels ranging from the microscopic to macroscopic sizes. The use of alginates as an encapsulation material is of growing interest, as it is fully bio-based, bio-compatible and bio-degradable. The field of application of alginate encapsulation is also extremely broad, and there is no doubt it will become even broader in the near future considering the societal demand for sustainable materials in technological applications. In this review, alg

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6

Putri, Tansza S., Deviyanti Pratiwi, Eddy, et al. "Pengaruh suhu air terhadap setting time dari bahan cetak alginat." e-GiGi 12, no. 1 (2023): 74–78. http://dx.doi.org/10.35790/eg.v12i1.47105.

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Abstract: Irreversible hydrocolloid impression materials or alginate is commonly used in dental practice. Its setting time range is 1–4.5 minutes. The setting time is affected by several factors such as water temperature mixed with the alginate powder. There are previous studies evaluated the effect of water temperature on the alginate’s setting time, however, the collected data is still minimal. Therefore, this study aimed to evaluate the effect of water temperature on alginate’s setting time on larger scale. There were total of 423 samples divided into three groups: cold, moderate, and warm

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7

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 algina

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8

Fischer, Melissa, Florian Gebhard, Timo Hammer, et al. "Microbial alginate dressings show improved binding capacity for pathophysiological factors in chronic wounds compared to commercial alginate dressings of marine origin." Journal of Biomaterials Applications 31, no. 9 (2017): 1267–76. http://dx.doi.org/10.1177/0885328217702173.

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Marine alginates are well established in wound management. Compared with different modern wound dressings, marine alginates cannot prove superior effects on wound healing. Alginates from bacteria have never been studied for medical applications so far, although the microbial polymer raises expectations for improved binding of wound factors because of its unique O-acetylation. Due to its possible positive effects on wound healing, alginates from bacteria might be a superior future medical product for clinical use. To prove the binding capacity of microbial alginates to pathophysiological factor

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9

Wibowo, Agung Ari, Ade Sonya Suryandari, Eko Naryono, Vania Mitha Pratiwi, Muhammad Suharto, and Naila Adiba. "Encapsulation of Clove Oil within Ca-Alginate-Gelatine Complex: Effect of Process Variables on Encapsulation Efficiency." Jurnal Teknik Kimia dan Lingkungan 5, no. 1 (2021): 71. http://dx.doi.org/10.33795/jtkl.v5i1.214.

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Karena memiliki khasiat seperti analgesik, minyak cengkeh biasa digunakan sebagai obat, antibakteri, antioksidan, dan antimikroba. Kemungkinan enkapsulasi minyak cengkeh sebagai makrokapsul padat dipelajari dengan pembuatan makrokapsul Ca-Alginate-Gelatine. Variabel proses yang digunakan adalah variasi konsentrasi alginat 1% dan 1,5% b / v, dan perbandingan massa antara alginat-gelatin divariasikan antara 1: 4, 1: 6, dan 1: 8 w /w. Selain itu, variasi konsentrasi CaCl2 (10%, 20% dan 30% w / v) sebagai cross-linking agent pembentukan kompleks Ca-Alginate juga digunakan sebagai variabel proses.

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10

Rokhati, Nur, Bambang Pramudono, Nyoman Widiasa, and Heru Susanto. "KARAKTERISASI FILM KOMPOSIT ALGINAT DAN KITOSAN." Reaktor 14, no. 2 (2012): 158. http://dx.doi.org/10.14710/reaktor.14.2.158-164.

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CHARACTERIZATION OF ALGINATE AND CHITOSAN COMPOSITE FILM. Due to the specific characteristics of (thin) films, the use of polymer films in various aplications has singnificantly increased. Alginate and chitosan are natural polymers, which have potential as a raw material for the manufacture of composite films. This paper presents the preparation and characterization of alginate, chitosan and chitosan-alginate composite films. The film characterization included permeability test, degree of swelling, mechanical property, morphology (by SEM), and surface chemistry (by FTIR). The results showed th

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11

Kulašević, Lazar N. "Alginate: Applications in the modern world." Chemia Naissensis 1, no. 1 (2018): 187–97. http://dx.doi.org/10.46793/chemn1.1.187k.

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Alginate is a natural polysaccharide extracted from the cell walls of brown algae. Thanks to its biocompatibility, biodegradability, nontoxicity, and low cost, this biopolymer is widely applicable across various fields of biomedical science and bioengineering. Alginates are used as a gelling agent in food industry. Alginate hydrogels are an appealing scaffold material because of their resemblance with natural tissues. Consequently, alginates are widely used in tissue engineering and alginate gel beads as transport vehicles in drug delivery systems. Nonetheless, alginate hydrogels are used in n

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12

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 disemp

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Koti, Basawaraj A., S. Manohar, and J. Lalitha. "Media Optimization for Depolymerization of Alginate by Pseudomonas aeruginosa AG LSL-11." International Letters of Natural Sciences 19 (July 2014): 30–39. http://dx.doi.org/10.18052/www.scipress.com/ilns.19.30.

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An agar degrading bacterium Pseudomonas aeruginosa AG LSL-11 was acclimatized to alginate for the production of alginase. Production parameters such as pH, temperature, influence of simple carbohydrates and nitrogen sources, and effect of NaCl on growth and alginase production were carried out. Maximum growth was observed at pH 9.0 and 35°C, while alginase was produced optimally at pH 9.0 and 30°C. The alginase produced by Pseudomonas aeruginosa AG LSL-11 was inducible by alginate, and repressed by other simple sugar when supplemented along with alginate in the medium. The bacterium did not re

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Koti, Basawaraj A., S. Manohar, and J. Lalitha. "Media Optimization for Depolymerization of Alginate by <i>Pseudomonas aeruginosa</i> AG LSL-11." International Letters of Natural Sciences 19 (July 16, 2014): 30–39. http://dx.doi.org/10.56431/p-e5z1l4.

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An agar degrading bacterium Pseudomonas aeruginosa AG LSL-11 was acclimatized to alginate for the production of alginase. Production parameters such as pH, temperature, influence of simple carbohydrates and nitrogen sources, and effect of NaCl on growth and alginase production were carried out. Maximum growth was observed at pH 9.0 and 35°C, while alginase was produced optimally at pH 9.0 and 30°C. The alginase produced by Pseudomonas aeruginosa AG LSL-11 was inducible by alginate, and repressed by other simple sugar when supplemented along with alginate in the medium. The bacterium did not re

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15

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 chito

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16

Lee, Jin W., and F. Day. "The separation of alginate biosynthesis and acetylation in Pseudomonas syringae." Canadian Journal of Microbiology 44, no. 4 (1998): 394–98. http://dx.doi.org/10.1139/w98-008.

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Seaweed alginate was acetylated by resting cells of Pseudomonas syringae subsp. phaseolicola ATCC 19304. Physiological studies on this strain and its UV-induced mutants showed no correlation between bacterial alginate biosynthesis and acetylation. Specific yields of alginate and degree of acetylation in these polymers varied with strain and culture medium. This was indirect evidence that alginate biosynthesis is separate from polysaccharide acetylation. It indicated that the enzyme system involved in alginate biosynthesis was not directly linked to alginate acetylation and explained why microb

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17

Garanin, Roman, and Igor Lykov. "Biosorption of zinc and copper ions by immobilized yeast under aerobic and anaerobic conditions." E3S Web of Conferences 548 (2024): 02004. http://dx.doi.org/10.1051/e3sconf/202454802004.

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Studies have been conducted to evaluate the efficiency of biosorption of zinc and copper ions by brewing yeast Saccharomyces cerevisiae immobilized on alginates. The studies were carried out under aerobic and anaerobic conditions using calcium, calcium, magnesium, and aluminum alginates. Under aerobic conditions, when live yeast was immobilized in calcium alginate, the concentration of zinc ions in an aqueous solution decreased within 2 hours by 99.76%, and copper ions by 91.7%. Biosorbents based on a mixture of calcium and magnesium alginates work less effectively (reducing the concentration

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18

Soukaina, Bouissil, EL Alaoui-Talibi Zainab, Pierre Guillaume, et al. "Radical Depolymerization of Alginate Extracted from Moroccan Brown Seaweed Bifurcaria bifurcata." Applied Sciences 10, no. 12 (2020): 4166. http://dx.doi.org/10.3390/app10124166.

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The degradation of alginate extracted from Moroccan Bifurcaria bifurcata has not been fully established to date. In this work, we report the extraction and the characterization of alginate (ASBB) from the brown algae B. bifurcata, as well as the production of oligo-alginates (OGABs) by using a green chemistry process. The depolymerization of ASBB was carried out by controlled radical hydrolysis through our green chemistry process using a hydrogen peroxide (H2O2) catalyst. The molecular weight (Mw) and degree of polymerization (DP) distribution of oligo-alginates (OGABs) obtained were then char

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19

Fransiska, Dina, Akbar Akbar, Rahmawati Rahmawati, and Giyatmi Giyatmi. "KARAKTERISASI NATRIUM ALGINAT DARI BANTEN, LAMPUNG DAN YOGYAKARTA." Jurnal Teknologi Pangan dan Kesehatan (The Journal of Food Technology and Health) 2, no. 2 (2020): 97–104. http://dx.doi.org/10.36441/jtepakes.v2i2.521.

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ABSTRAK: Pada penelitian ini dilakukan studi mengenai ekstraksi alginat dari beberapa lokasi yaitu Banten, Lampung dan Yogyakarta. Hal ini bertujuan untuk menemukan Na-alginat terbaik dari beberapa rumput laut coklat yang ada. Parameter mutu alginate yaitu kadar air, kadar abu dan kadar abu tak larut asam. Hasil analisis didapatkan alginat dengan mutu terbaik berasal dari daerah Yogyakarta dikarenakan memiliki CAW paling tinggi dan impurities paling rendah pada pengujian secara fisik saat berbentuk rumput laut coklat kering dan memiliki rendemen paling banyak, viskositas paling tinggi, kadar a

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Warashanti, Ni Wayan Florina, Drg Desak Nyoman Ari Susanti, and Drg Ni Kd Fiora Rena Pertiwi, M.Biomed. "Perubahan dimensi hasil cetakan alginat setelah perendaman dalam larutan desinfektan rebusan daun alpukat (Persea Americana)." Bali Dental Journal 5, no. 2 (2021): 109–13. http://dx.doi.org/10.51559/bdj.v5i2.74.

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Background: One of the important steps in many dental procedures is an impression. The impression process must be carried out using accurate materials because the impression results must represent the structure of the oral cavity accurately. The material that is widely used is alginate. The process of printing with alginate is one source of cross-infection so that after the alginate is removed from the oral cavity, disinfection must be carried out. Disinfection can be done by soaking in a decoction of avocado leaves. However, the immersion process can cause the alginate mold to change dimensio

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Jeoh, Tina, Dana E. Wong, Scott A. Strobel, et al. "How alginate properties influence in situ internal gelation in crosslinked alginate microcapsules (CLAMs) formed by spray drying." PLOS ONE 16, no. 2 (2021): e0247171. http://dx.doi.org/10.1371/journal.pone.0247171.

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Alginates gel rapidly under ambient conditions and have widely documented potential to form protective matrices for sensitive bioactive cargo. Most commonly, alginate gelation occurs via calcium mediated electrostatic crosslinks between the linear polyuronic acid polymers. A recent breakthrough to form crosslinked alginate microcapsules (CLAMs) by in situ gelation during spray drying (“CLAMs process”) has demonstrated applications in protection and controlled delivery of bioactives in food, cosmetics, and agriculture. The extent of crosslinking of alginates in CLAMs impacts the effectiveness o

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Milla, Lalita El, Decky J. Indrani, and Bambang Irawan. "SINTESIS DAN UJI POROSITAS SCAFFOLD HIDROKSIAPATIT/ALGINAT." ODONTO : Dental Journal 5, no. 1 (2018): 49. http://dx.doi.org/10.30659/odj.5.1.49-53.

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Background: In bone tissue engineering, scaﬀold is required with a large porosity of 80-90%. The porosity of the hydroxyapatite/alginate scaﬀold can be aﬀected by the alginate concentration used. The objective of this study was to determine whether hydroxyapatite/alginate scaﬀolds with alginate concentration of 1% and 3% could be synthesized and to determine whether the use of low concentration alginates in hydroxyapatite/alginate scaﬀolds could increase thescaﬀold porosity.Methods: The method used in making scaﬀold was freeze drying method, while the method used to measure porosity was liquid

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Addina, Syahira, Subaryono Subaryono, and Sukarno Sukarno. "Aktivitas Oligosakarida Alginat Sebagai Antioksidan dan Inhibitor Alfa glukosidase." Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan 15, no. 1 (2020): 47. http://dx.doi.org/10.15578/jpbkp.v15i1.646.

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Oligosakarida alginat (OSA) adalah produk hasil depolimerisasi polimer alginat yang biasanya terdiri dari 2-25 monomer. Produksi OSA dapat dilakukan melalui proses enzimatis, fisik maupun kimiawi. Tujuan penelitian ini adalah mengetahui karakteristik dan bioaktivitas OSA sebagai antioksidan dan inhibitor α-glukosidase. Proses produksi OSA dilakukan secara enzimatis dengan 3 cara penambahan alginat liase yaitu ditambahkan satu kali di awal reaksi (E1), ditambahkan 4 kali dengan interval 2 jam (E2) dan 2 kali interval 4 jam (E3) dengan total volume sama, yaitu 0,15 mL dan aktivitas enzim (1 unit

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Prasetyaningrum, A., and A. Purbasari. "Ekstraksi Alginate Dari Rumput Laut Dan Aplikasinya Pada Industri." REAKTOR 6, no. 2 (2017): 63. http://dx.doi.org/10.14710/reaktor.6.2.63-67.

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Alginate merupakan komponen utama dari getah alga coklat (Phaeophyceae) yang merupakan senyawa penting dalam dinding sel. Secara kimia alginate merupakan komponen murni dalam asam uronat yang tersusun dalam bentuk rantai linier panjang. Isolasi alginate dari rumput laut coklat dilakukan dengan cara ekstraksi dengan Na2CO3. Pada penelitian ini dilakukan penentuan metode ekstraksi yang paling baik dari ketiga metode yang ada, yaitu metode Vincent, metode Herter, dan metode Bashford. Selanjutnya dilakukan optimasi kondisi operasi yang relative lebih baik untuk melakukan ekstraksi alginat dari rum

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Bennacef, Chanez, Stéphane Desobry, Jordane Jasniewski, Sébastien Leclerc, Laurent Probst, and Sylvie Desobry-Banon. "Influence of Alginate Properties and Calcium Chloride Concentration on Alginate Bead Reticulation and Size: A Phenomenological Approach." Polymers 15, no. 20 (2023): 4163. http://dx.doi.org/10.3390/polym15204163.

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Two types of alginates, AlgLF and AlgP, were used in this study to produce alginate beads by electro-vibratory extrusion. AlgLF and AlgP exhibited different Mannuronate/Guluronate (M/G) ratios and molecular weights as measured by NMR and SEC-MALS. The calcium chloride concentration was found to have the greatest effect on bead size. Higher concentrations resulted in smaller beads. AlgLF with a higher molecular weight and a lower proportion of G blocks showed smaller beads. For both alginates, the bead size was also influenced by the flow rate and vibration frequency. Alginate solution aging sh

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Langit, Novita Thea Puspita, Ali Ridlo, and Subagiyo Subagiyo. "Pengaruh Konsentrasi Alginat Dengan Gliserol Sebagai Plasticizer Terhadap Sifat Fisik Dan Mekanik Bioplastik." Journal of Marine Research 8, no. 3 (2019): 314–21. http://dx.doi.org/10.14710/jmr.v8i3.25256.

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Munculnya permasalahan lingkungan akibat plastik sintetik mendorong perlunya penelitian bahan kemasan mudah terurai (bioplastik). Salah satu bahan yang tersedia di alam dan berpotensi sebagai pembentuk bioplastik adalah alginat karena mampu membentuk gel. Bioplastik dari alginat memiliki sifat yang tidak fleksibel sehingga perlu ditambah gliserol sebagai plasticizer. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi alginat dari Sargassum sp. terhadap sifat fisik dan mekanik bioplastik dengan penambahan gliserol dan CaCl2. Materi penelitian ini adalah alginat hasil ekstraksi Sarga

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Nagpal, Ajay, Ranjith Madhavan, Navia George, Niharika R. Thummala, and SV Ravi. "Self-disinfecting Alginate vs Conventional Alginate: Effect on Surface Hardness of Gypsum Cast—An in vitro Study." Journal of Contemporary Dental Practice 18, no. 11 (2017): 1061–64. http://dx.doi.org/10.5005/jp-journals-10024-2176.

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ABSTRACT Introduction For the construction of any dental prosthesis, accurate impressions are necessary. Hence, we undertook the present study to evaluate and compare the surface hardness of gypsum casts poured from impressions made using conventional alginate and self-disinfecting alginate. Materials and methods A total of 30 impressions of stainless steel die were made, out of which 15 impressions were made with conventional alginate and 15 were made with selfdisinfecting alginate and poured using Type III dental stone. Thirty stone specimens were subjected for hardness testing. Data were an

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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

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Ayuni, Ni Putu Sri, Ni Wayan Yuningrat, and Ni Wayan Citra. "Kajian Transpor Kreatinin Menggunakan Membran Kitosan-Alginat Tertaut Silang Polivinil Alkohol (PVA)." Jurnal Rekayasa Proses 12, no. 2 (2018): 56. http://dx.doi.org/10.22146/jrekpros.38401.

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A B S T R A C TThe objective of this research was to determine the efficiency of the creatinine transport using chitosan alginate cross linked by polyvinyl alcohol (PVA) 0.1% with 70, 100, and 130 mg/L of creatinine concentration. The subject of this study was the membranes of chitosan alginate PVA, while the object of this study was the efficiency of the creatinine transport. The PVA 0.1% cross-linking chitosan-alginate membrane (1:0.15) was successfully synthesized. The membrane synthesized was characterized by FTIR, as well as tensile and strain test. The FTIR spectra showed that there is a

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Dalheim, Marianne Ø., Line Aa Omtvedt, Isabel M. Bjørge, et al. "Mechanical Properties of Ca-Saturated Hydrogels with Functionalized Alginate." Gels 5, no. 2 (2019): 23. http://dx.doi.org/10.3390/gels5020023.

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Abstract (sommario):

In this work, the mechanical properties and stability of alginate hydrogels containing functionalized alginates (peptide and β-cyclodextrin) were studied. There is an increasing interest in the modification of alginates to add functions such as cell attachment and increased solubility of hydrophobic drugs, for better performance in tissue engineering and drug release, respectively. Functionalization was achieved in this study via periodate oxidation followed by reductive amination, previously shown to give a high and controllable degree of substitution. Young’s modulus and the stress at ruptur

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31

Miskiyah, Miskiyah, Juniawati Juniawati, and Widaningrum Widaningrum. "Optimasi Pati-Alginat sebagai Bahan Pengkapsul Bakteri Probiotik terhadap Karakteristik Beads." Jurnal Aplikasi Teknologi Pangan 9, no. 1 (2020): 24. http://dx.doi.org/10.17728/jatp.4569.

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Abstract (sommario):

Enkapsulasi merupakan proses pembungkusan (coating) suatu bahan inti dengan menggunakan bahan pengkapsul tertentu. Pemanfaatan maltodekstrin, pati sagu, dan maizena sebagai bahan pengkapsul probiotik belum banyak dikembangkan sehingga dapat dijadikan kandidat bahan pengkapsul baru. Tujuan penelitian ini adalah untuk menentukan perbandingan konsentrasi pati-alginat terbaik yang dapat digunakan untuk enkapsulasi probiotik. Rancangan percobaan yang digunakan adalah rancangan faktorial menggunakan 2 faktor, yaitu jenis bahan pengkapsul dan perbandingan konsentrasi bahan pengkapsul. Faktor jenis ba

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32

Rashedy, Sarah H., Mohamed S. M. Abd El Hafez, Mahmoud A. Dar, João Cotas, and Leonel Pereira. "Evaluation and Characterization of Alginate Extracted from Brown Seaweed Collected in the Red Sea." Applied Sciences 11, no. 14 (2021): 6290. http://dx.doi.org/10.3390/app11146290.

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Abstract (sommario):

Alginates are one of the most important compounds of brown seaweeds. These compounds are employed in the food area, because of their important rheological properties, such as viscosity, gelling, and stabilizing features and as dietary fiber source. In this study, five species of dominant brown seaweeds were collected in the Red Sea (Padina boergesenii, Turbinaria triquetra, Hormophysa cuneiformis, Dictyota ciliolata, and Sargassum aquifolium) so as to characterize the alginate yield and its properties. The analysis demonstrated differences in the alginate yield among the seaweeds. The highest

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33

Elbayomi, Smaher M., Haili Wang, Tamer M. Tamer, and Yezi You. "Enhancement of Antioxidant and Hydrophobic Properties of Alginate via Aromatic Derivatization: Preparation, Characterization, and Evaluation." Polymers 13, no. 15 (2021): 2575. http://dx.doi.org/10.3390/polym13152575.

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Abstract (sommario):

The preparation of bioactive polymeric molecules requires the attention of scientists as it has a potential function in biomedical applications. In the current study, functional substitution of alginate with a benzoyl group was prepared via coupling its hydroxyl group with benzoyl chloride. Fourier transform infrared spectroscopy indicated the characteristic peaks of aromatic C=C in alginate derivative at 1431 cm−1. HNMR analysis demonstrated the aromatic protons at 7.5 ppm assigned to benzoyl groups attached to alginate hydroxyl groups. Wetting analysis showed a decrease in hydrophilicity in

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34

T., Jayanthy, and Vayyala P. Reddy. "Efficacy of an alginate versus proton pump inhibitor in the symptomatic relief of gastroesophageal reflux symptoms in pregnant women." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 12, no. 6 (2023): 1616–21. http://dx.doi.org/10.18203/2320-1770.ijrcog20231524.

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Abstract (sommario):

Background: Gastroesophageal reflux disease (GERD) is frequently seen during pregnancy with prevalence of 80%. Proton pump inhibitors (PPI) are the most effective drugs used in the treatment of reflux symptoms. Alginates are natural polysaccharide polymer which builds a non-systemic barrier against acid and food reflux in the oesophagus. Aims and objectives were to compare the efficacy of alginate versus PPIs in pregnant women, and to determine the time to onset of decrease in the pain intensity of alginate to PPIs. Methods: This is a prospective randomised study conducted in pregnant women wi

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35

Ursini, Ornella, Roberta Angelini, Silvia Franco, and Barbara Cortese. "Understanding the metal free alginate gelation process." RSC Advances 11, no. 55 (2021): 34449–55. http://dx.doi.org/10.1039/d1ra06599h.

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Abstract (sommario):

Alginate gelling by ionic cross-linking using multivalent ions has been known and exploited for several decades. We focus on the possibility to obtain alginate hydrogels without using metal cation in order to obtain metal-free alginates hydrogels.

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36

Adib, Yara, Kevin Serror, Jose Amaya Pinzon, et al. "In Vitro Modulation of Macrophage Inflammatory and Pro-Repair Properties Essential for Wound Healing by Calcium and Calcium-Alginate Dressings." Cells 14, no. 12 (2025): 909. https://doi.org/10.3390/cells14120909.

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Abstract (sommario):

Macrophages participate in cutaneous wound healing by adopting M1 pro-inflammatory and M2 immunoregulatory/pro-repair phenotypes. Chronic wounds associated with a deficient macrophage response could benefit from treatments that restore an acute inflammatory response and promote healing. Calcium-alginate dressings release calcium ions, which are potent bioactivators of macrophage function in wounds. Here, the effects of two calcium-alginate dressings, Algosteril® (ALG, pure Ca2+ alginate) and Biatain® Alginate (BIA, Ca2+ alginate with carboxymethyl cellulose), and a 3 mM CaCl2 solution were com

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37

Ummat, Viruja, Ming Zhao, Saravana Periaswamy Sivagnanam, et al. "Ultrasound-Assisted Extraction of Alginate from Fucus vesiculosus Seaweed By-Product Post-Fucoidan Extraction." Marine Drugs 22, no. 11 (2024): 516. http://dx.doi.org/10.3390/md22110516.

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Abstract (sommario):

The solid phase byproduct obtained after conventional fucoidan extraction from the brown seaweed Fucus vesiculosus can be used as a source containing alginate. This study involves ultrasound-assisted extraction (UAE) of alginate from the byproduct using sodium bicarbonate. Response surface methodology (RSM) was applied to obtain the optimum conditions for alginate extraction. The ultrasound (US) treatments included 20 kHz of frequency, 20–91% of amplitude, and an extraction time of 6–34 min. The studied investigated the crude alginate yield (%), molecular weight, and alginate content (%) of th

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38

Kıvılcımdan Moral, Ç., Ö. Doğan, and F. D. Sanin. "Use of laboratory-grown bacterial alginate in copper removal." Water Science and Technology 65, no. 11 (2012): 2003–9. http://dx.doi.org/10.2166/wst.2012.101.

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Abstract (sommario):

Industrial production leads to toxic heavy metal pollution in water bodies. Copper is one of the examples that requires removal from effluents before being discharged. It is difficult and sometimes very expensive to remove toxic heavy metals by conventional treatment techniques. This study aims to remove copper by the use of bacterial alginate as a non-conventional technique. Bacterial alginates (natural polymers composed of mannuronic and guluronic acid monomers) were synthesized by Azotobacter vinelandii ATCC® 9046 in a laboratory fermentor under controlled environmental conditions. The algi

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39

Ridlo, Ali, Sri Sedjati, Endang Supriyantini, and Dinda Ayuniar Zanjabila. "Pengembangan Dan Karakterisasi Bioplastik Karagenan-Alginat-Gliserol Dengan Perlakuan Kalsium Klorida." Buletin Oseanografi Marina 12, no. 1 (2022): 43–53. http://dx.doi.org/10.14710/buloma.v12i1.48020.

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Abstract (sommario):

Material biopolimer tunggal seperti alginat dan karagenan tidak memiliki sifat fisiko-kimia dan mekanik yang mencukupi untuk digunakan sebagai produk spesifik seperti bioplastik, sehingga diperlukan kombinasi agar diperoleh hidrogel yang lebih kuat dan tahan air. Ion Ca2+ berperan sebagai crosslinker polimer bermuatan negative (alginat dan karagenan) serta meningkatkan struktur jaringan, sifat reologi dan hidrofobisitasnya, dengan cara berikatan silang dengan gugus karboksil alginat daan gugus sulfat karagenaan. Penelitian ini bertujuan untuk mengetahui pengaruh perendaman dalam larutan CaCl2

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40

Gabriella, Zsoldos, Palfalusi Viktor, and Szivos Tamas. "Tribological Examination of Calcium alginate – UHMWPE blends." International Multispeciality Journal of Health 4, no. 5 (2018): 167–74. https://doi.org/10.5281/zenodo.1256564.

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Abstract (sommario):

<strong>Abstract</strong><strong>—</strong> Continuing our previous researches on UHMWPE (Ultra-High- Molecular-Weight Polyethylene) based implant material and its fusion with Ca-alginate, we describe new methods for preparing Ca-alginate blended UHMWPE samples and how we extended the testing of the prepared samples. If sufficient content of Ca-alginate can be achieved and the Calcium-alginate blended UHMWPE can be made, it might lead to an implant material which can promote bone formation. Earlier result shows that the Calcium–alginate contentwill be formed in the structure of UHM

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41

Song, Yun Ha, Hee Chul Woo, and Jaekyoung Lee. "Eco-Friendly Depolymerization of Alginates by H2O2 and High-Frequency Ultrasonication." Clean Technologies 5, no. 4 (2023): 1402–14. http://dx.doi.org/10.3390/cleantechnol5040069.

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Abstract (sommario):

Marine biomass has attracted attention as an environmentally sustainable energy source that can replace petroleum-based resources. Alginates, the main natural polysaccharides extracted from seaweeds, are used in various fields, such as food, pharmaceuticals, and chemical raw materials. Because the versatile applications of alginates depend on their physicochemical properties, which are controlled by their molecular weights, proper alginate depolymerization should be established. Previous approaches have limitations such as long reaction times and environmental issues. In this study, we report

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42

Prasad. B, Venkata Nagendra, and Latha D. "Investigating the Synergistic Antibacterial Activity of Epiphytic Bacterial Polyketides and Biopolymer Alginates from Marine Microalgae." Journal of University of Shanghai for Science and Technology 23, no. 10 (2021): 115–35. http://dx.doi.org/10.51201/jusst/21/09704.

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Abstract (sommario):

The objective was framed to analyse the synergistic antibacterial activity and woundhealing ability of the developed polyketide-alginate polymers. Alginates were extracted from a brown seaweed Padina tetrastromatica and used as a synergistic compound along with bacterial polyketides. Polyketides and alginate polymer combinations were used against test bacteria to determine the synergistic antibacterial activity. A novel wound-healing film was developed using polyketide and alginates with synergistic concentrations and its degradability and wound-healing ability was investigated. The findings i

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43

Rodríguez-Montesinos, Y. E., G. Hernández-Carmona, and D. L. Arvizu-Higuera. "RECIRCULACIÓN DE LÍQUIDOS RESIDUALES EN LA CONVERSIÓN DE ALGINATO DE CALCIO EN ÁCIDO ALGÍNICO DURANTE EL PROCESO DE PRODUCCIÓN DE ALGINATOS." CICIMAR Oceánides 20, no. 1-2 (2005): 1. http://dx.doi.org/10.37543/oceanides.v20i1-2.17.

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Abstract (sommario):

Se estudió el efecto de recircular la solución ácida residual en la etapa de conversión de alginato de calcio en ácido algínico, utilizando el alga Macrocystis pyrifera . Los líquidos residuales fueron reciclados en un sistema en contra corriente, con lo cual se logró procesar tres cargas de alginato de sodio con el mismo volumen de agua, permitiendo una conversión efectiva en ácido algínico, con una reducción del 56% en el consumo de agua dulce. Se experimentó un sistema de recirculación en línea (sin reemplazo de agua), este sistema no es recomendable, debido a que la acumulación de calcio e

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44

Rodríguez-Montesinos, Y. E., G. Hernández-Carmona, and D. L. Arvizu-Higuera. "RECIRCULACIÓN DE LÍQUIDOS RESIDUALES EN LA CONVERSIÓN DE ALGINATO DE CALCIO EN ÁCIDO ALGÍNICO DURANTE EL PROCESO DE PRODUCCIÓN DE ALGINATOS." CICIMAR Oceánides 20, no. 1-2 (2005): 1. http://dx.doi.org/10.37543/oceanides.v20i1-2.17.

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Abstract (sommario):

Se estudió el efecto de recircular la solución ácida residual en la etapa de conversión de alginato de calcio en ácido algínico, utilizando el alga Macrocystis pyrifera . Los líquidos residuales fueron reciclados en un sistema en contra corriente, con lo cual se logró procesar tres cargas de alginato de sodio con el mismo volumen de agua, permitiendo una conversión efectiva en ácido algínico, con una reducción del 56% en el consumo de agua dulce. Se experimentó un sistema de recirculación en línea (sin reemplazo de agua), este sistema no es recomendable, debido a que la acumulación de calcio e

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45

Zhu, Yuanjia, Charles J. Stark, Sarah Madira, et al. "Three-Dimensional Bioprinting with Alginate by Freeform Reversible Embedding of Suspended Hydrogels with Tunable Physical Properties and Cell Proliferation." Bioengineering 9, no. 12 (2022): 807. http://dx.doi.org/10.3390/bioengineering9120807.

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Abstract (sommario):

Extrusion-based three-dimensional (3D) bioprinting is an emerging technology that allows for rapid bio-fabrication of scaffolds with live cells. Alginate is a soft biomaterial that has been studied extensively as a bio-ink to support cell growth in 3D constructs. However, native alginate is a bio-inert material that requires modifications to allow for cell adhesion and cell growth. Cells grown in modified alginates with the RGD (arginine-glycine-aspartate) motif, a naturally existing tripeptide sequence that is crucial to cell adhesion and proliferation, demonstrate enhanced cell adhesion, spr

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46

Gao, Shu-Kun, Rui Yin, Xiao-Chen Wang, et al. "Structure Characteristics, Biochemical Properties, and Pharmaceutical Applications of Alginate Lyases." Marine Drugs 19, no. 11 (2021): 628. http://dx.doi.org/10.3390/md19110628.

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Abstract (sommario):

Alginate, the most abundant polysaccharides of brown algae, consists of various proportions of uronic acid epimers α-L-guluronic acid (G) and β-D-mannuronic acid (M). Alginate oligosaccharides (AOs), the degradation products of alginates, exhibit excellent bioactivities and a great potential for broad applications in pharmaceutical fields. Alginate lyases can degrade alginate to functional AOs with unsaturated bonds or monosaccharides, which can facilitate the biorefinery of brown algae. On account of the increasing applications of AOs and biorefinery of brown algae, there is a scientific need

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47

P. Divya, Jenifar, S. Ajithkumar, B. Harshini, P. Navanethan, and A. Praveen. "Design and development of bandages using alginate from sargassum species." i-manager's Journal on Life Sciences 3, no. 3 (2024): 11. https://doi.org/10.26634/jls.3.3.21489.

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Abstract (sommario):

Bandage invention pertains to the field of health sciences, specifically in developing sustainable, bioactive bandages using alginates derived from marine sources. With increasing concerns over environmental contamination from health products, there is a recognized need for sustainable practices in the production and disposal of medicinal materials. Marine-derived alginates, particularly from the Sargassum species, possess unique properties that make them ideal for wound care. These properties include antimicrobial activity, biodegradability, biocompatibility, and the ability to promote wound

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48

Putri, Arlina Prima, Francesco Picchioni, Sri Harjanto, and Mochamad Chalid. "Alginate Modification and Lectin-Conjugation Approach to Synthesize the Mucoadhesive Matrix." Applied Sciences 11, no. 24 (2021): 11818. http://dx.doi.org/10.3390/app112411818.

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Abstract (sommario):

Alginates are natural anionic polyelectrolytes investigated in various biomedical applications, such as drug delivery, tissue engineering, and 3D bioprinting. Functionalization of alginates is one possible way to provide a broad range of requirements for those applications. A range of techniques, including esterification, amidation, acetylation, phosphorylation, sulfation, graft copolymerization, and oxidation and reduction, have been implemented for this purpose. The rationale behind these investigations is often the combination of such modified alginates with different molecules. Particularl

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49

Badur, Ahmet H., Sujit Sadashiv Jagtap, Geethika Yalamanchili, Jung-Kul Lee, Huimin Zhao, and Christopher V. Rao. "Alginate Lyases from Alginate-Degrading Vibrio splendidus 12B01 Are Endolytic." Applied and Environmental Microbiology 81, no. 5 (2015): 1865–73. http://dx.doi.org/10.1128/aem.03460-14.

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Abstract (sommario):

ABSTRACTAlginate lyases are enzymes that degrade alginate through β-elimination of the glycosidic bond into smaller oligomers. We investigated the alginate lyases fromVibrio splendidus12B01, a marine bacterioplankton species that can grow on alginate as its sole carbon source. We identified, purified, and characterized four polysaccharide lyase family 7 alginates lyases, AlyA, AlyB, AlyD, and AlyE, fromV. splendidus12B01. The four lyases were found to have optimal activity between pH 7.5 and 8.5 and at 20 to 25°C, consistent with their use in a marine environment. AlyA, AlyB, AlyD, and AlyE we

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50

Fransiska, Aria, Vinny Putri Belia, Reni Nofika, Nelvi Yohana, and Sri Ramayanti. "The effect of cassava starch and modified cassava starch on the setting time of alginate impression: a laboratory experiment." Padjadjaran Journal of Dentistry 37, no. 1 (2025): 18–24. https://doi.org/10.24198/pjd.vol37no1.59194.

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Abstract (sommario):

Introduction: Alginate is the most commonly used impression material in dentistry for creating accurate impressions of soft and hard tissues in the oral cavity. Its properties can be modified by adding starch, as both alginate and starch contain polysaccharides. This modification affects not only alginate's dimensional stability but also its setting time. This study aimed to analyze cassava starch and modifies cassava starch on the setting time of alginate. Method: This experimental laboratory study measured the setting time of pure alginate, alginate with 40% cassava starch, and alginate with

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