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1. A Bioinspired Alginate-Gum Arabic Hydrogel with Micro-/Nanoscale Structures for Controlled Drug Release in Chronic Wound Healing

Author:
Li, Mi; Li, Haichang; Li, Xiangguang; Zhu, Hua; Xu, Zihui; Liu, Lianqing; Ma, Jianjie; Zhang, Mingjun
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.27 pp. 22160-22175
ISSN:
1944-8252
Subject:
sodium alginate,   etc   ; Drosera; adhesion; animal models; atomic force microscopy; bioactive properties; biocompatible materials; calcium; carnivores; cell membranes; cellular microenvironment; chemical composition; crosslinking; drugs; encapsulation; experimental design; gum arabic; hydrogels; image analysis; in vivo studies; mechanical properties; physicochemical properties; tissue repair;     Show all 23 Subjects
Abstract:
... Biopolymeric hydrogels have drawn increasing research interest in biomaterials due to their tunable physical and chemical properties for both creating bioactive cellular microenvironment and serving as sustainable therapeutic reagents. Inspired by a naturally occurring hydrogel secreted from the carnivorous Sundew plant for trapping insects, here we have developed a bioinspired hydrogel to deliver ...
DOI:
10.1021/acsami.7b04428

2. A biomimetic ion-crosslinked layered double hydroxide/alginate hybrid film

Author:
Liang, Ben-liang; Wang, Jian-feng; Shu, Ying-qi; Yin, Peng-gang; Guo, Lin
Source:
RSC advances 2017 v.7 no.52 pp. 32601-32606
ISSN:
2046-2069
Subject:
alginates,   etc   ; biomimetics; blood platelets; calcium; calcium carbonate; crosslinking; films (materials); filtration; light; mechanical properties; microstructure; nacre; wavelengths;     Show all 13 Subjects
Abstract:
... Natural nacre has an ordered layered arrangement of calcium carbonate platelets and ion-crosslinked protein, which enable it to achieve outstanding mechanical properties. Inspired by the relationship between structure and mechanical properties of natural nacre, we fabricate a Ca²⁺-crosslinked layered double hydroxide/alginate (LDH/ALG-Ca²⁺) hybrid film through filtration of Ca²⁺-crosslinked LDH/AL ...
DOI:
10.1039/c7ra04577h

3. Absorption and swelling characteristics of silver (I) antimicrobial wound dressings

Author:
Parikh, Dharnidhar V; Fink, Tom; DeLucca, Anthony J; Parikh, Ashish D
Source:
Textile research journal 2011 v.81 no.5 pp. 494
ISSN:
0040-5175
Subject:
alginates,   etc   ; bandages; silver; carboxymethylcellulose; swelling (materials); water;     Show all 6 Subjects
Abstract:
... An important characteristic of moist wound dressings is their ability to swell and absorb exudates from the wound, while maintaining a moist atmosphere at the wound site. At the SRRC, we have previously developed antimicrobial silversodium-carboxymethylated (CM)-cotton printcloth from the sodium salt of CM-cotton, and silver-Ca-Na alginates from four commercially available alginate moist wound dre ...
Handle:
10113/49388
DOI:
10.1177/0040517510380778

4. A Ca-alginate particle co-immobilized with Phanerochaete chrysosporium cells and the combined cross-linked enzyme aggregates from Trametes versicolor

Author:
Li, Yanchun; Wang, Zhi; Xu, Xudong; Jin, Liqiang
Source:
Bioresource technology 2015 v.198 pp. 464-469
ISSN:
0960-8524
Subject:
calcium alginate,   etc   ; Coriolus versicolor; Phanerochaete chrysosporium; crosslinking; decolorization; dyes; effluents; environmental factors; gels; laccase; lignin; manganese; peroxidases; white-rot fungi;     Show all 14 Subjects
Abstract:
... For improving stability of immobilized white-rot fungus to treat various effluents, Phanerochaete chrysosporium cells and the combined cross-link enzyme aggregates (combi-CLEAs) prepared from Trametes versicolor were co-immobilized into the Ca-alginate gel particles in this paper. The activity yields of obtained combi-CLEAs were 42.7% for lignin peroxidases (LiPs), 31.4% for manganese peroxidases ...
DOI:
10.1016/j.biortech.2015.09.032

5. Acceptability of alginate enriched bread and its effect on fat digestion in humans

Author:
Houghton, David; Wilcox, Matthew D.; Brownlee, Iain A.; Chater, Peter I.; Seal, Chris J.; Pearson, Jeffrey P.
Source:
Food hydrocolloids 2019 v.93 pp. 395-401
ISSN:
0268-005X
Subject:
alginates,   etc   ; adverse effects; breads; carboxylic ester hydrolases; compliance; enzyme inhibition; food records; humans; hydrocolloids; ileum; lifestyle; lipid content; lipolysis; obesity; physical activity; questionnaires; triacylglycerols;     Show all 17 Subjects
Abstract:
... Lifestyle interventions and physical activity remain the cornerstone of obesity management, as pharmacological therapies (orlistat) are associated with gastrointestinal (GI) side effects. Combining orlistat with fibers can reduce side effects, improving compliance. Therefore, a fiber that inhibits lipase without side effects could help treat obesity.The aims of the present work were to assess whet ...
DOI:
10.1016/j.foodhyd.2019.02.027

6. Accumulation of intra-cellular polyphosphate in Chlorella vulgaris cells is related to indole-3-acetic acid produced by Azospirillum brasilense

Author:
Meza, Beatriz; de-Bashan, Luz E.; Hernandez, Juan-Pablo; Bashan, Yoav
Source:
Research in microbiology 2015 v.166 pp. 399-407
ISSN:
0923-2508
Subject:
alginates,   etc   ; Azospirillum brasilense; Chlorella vulgaris; bacteria; indole acetic acid; microalgae; mutants; phosphates;     Show all 8 Subjects
Abstract:
... Accumulation of intra-cellular phosphate, as polyphosphate, was measured when the microalga Chlorella vulgaris was immobilized in alginate with either of two wild-type strains of the microalgae growth-promoting bacterium Azospirillum brasilense or their corresponding IAA-attenuated mutants. Wild type strains of A. brasilense induced higher amounts of intra-cellular phosphate in Chlorella than thei ...
DOI:
10.1016/j.resmic.2015.03.001

7. Acetic acid production of Vibrio halioticoli from alginate: a possible role for establishment of abalone-V. halioticoli association

Author:
Sawabe, T.; Setoguchi, N.; Inoue, S.; Tanaka, R.; Ootsubo, M.; Yoshimizu, M.; Ezura, Y.
Source:
Aquaculture 2003 v.219 no.1-4 pp. 671-679
ISSN:
0044-8486
Subject:
alginates,   etc   ; Haliotis discus; Haliotis diversicolor; Haliotis; invertebrates; Vibrio halioticoli; intestinal microorganisms; carbohydrate metabolism; fermentation; acetic acid; volatile fatty acids; formic acid; biosynthesis;     Show all 13 Subjects
Abstract:
... Acetic acid, which is converted from cellulose by means of the metabolism of their gut microbes, is an important oxidizable energy source and precursors of anabolism in ruminant animals and xylophagus insects. However, acetic acid production from algal polysaccharides by means of the metabolism of gut microbes of marine herbivorous invertebrates is not well studied. Abundance of Vibrio halioticoli ...

8. Achieving high antimicrobial activity: Composite alginate hydrogel beads releasing activated charcoal with an immobilized active agent

Author:
Osmokrovic, Andrea; Jancic, Ivan; Vunduk, Jovana; Petrovic, Predrag; Milenkovic, Marina; Obradovic, Bojana
Source:
Carbohydrate polymers 2018 v.196 pp. 279-288
ISSN:
0144-8617
Subject:
calcium alginate,   etc   ; Escherichia coli; Fourier transform infrared spectroscopy; Proteus mirabilis; Pseudomonas aeruginosa; absorption; activated carbon; antibacterial properties; antiseptics; desorption; energy-dispersive X-ray analysis; hydrogels; iodine; methicillin-resistant Staphylococcus aureus; models; scanning electron microscopy; sodium chloride; ultraviolet-visible spectroscopy;     Show all 18 Subjects
Abstract:
... New composites based on Ca-alginate hydrogels were produced that release activated charcoal (AC) particles with adsorbed povidone iodine (PVP-I) as a model antimicrobial substance in a physiological-like environment. Composite beads with different alginate (0.5–1.5%w/w) and AC (1–20%w/w) concentrations were analyzed by FE-SEM and characterized regarding textural parameters, swelling, and AC releas ...
DOI:
10.1016/j.carbpol.2018.05.045

9. Acid, Bile, and Heat Tolerance of Free and Microencapsulated Probiotic Bacteria

Author:
Ding, W.K.; Shah, N.P.
Source:
Journal of food science 2007 v.72 no.9 pp. M446
ISSN:
0022-1147
Subject:
alginates,   etc   ; probiotics; strains; strain differences; acid tolerance; heat tolerance; bile; bile salts; microencapsulation; mortality; hydrochloric acid;     Show all 11 Subjects
Abstract:
... Eight strains of probiotic bacteria, including Lactobacillus rhamnosus, Bifidobacterium longum, L. salivarius, L. plantarum, L. acidophilus, L. paracasei, B. lactis type Bl-O4, and B. lactis type Bi-07, were studied for their acid, bile, and heat tolerance. Microencapsulation in alginate matrix was used to enhance survival of the bacteria in acid and bile as well as a brief exposure to heat. Free ...
DOI:
10.1111/j.1750-3841.2007.00565.x

10. Acid gel formation in (pseudo) alginates with and without G blocks produced by epimerising mannuronan with C5 epimerases

Author:
Dentini, M.; Rinaldi, G.; Barbetta, A.; Risica, D.; Skjak-Braek, G.
Source:
Carbohydrate polymers 2006 v.63 no.4 pp. 519-526
ISSN:
0144-8617
Subject:
alginates; alginate gels,   etc   ; gels; mannans; circular dichroism spectroscopy; rheology; rheological properties; mechanical properties; viscoelasticity; gelation;     Show all 10 Subjects
Abstract:
... The main scope of this paper is the characterization, in terms of viscoelastic and mechanical properties, of acid gels formed from solutions of mannuronan ALG (0%G/0%GG) and its enzymatically epimerised products. The epimerised products were obtained using recombinantly produced mannuronan C5 epimerases named AlgE1 and AlgE4, which catalyse the conversion of mannuronic residues into guluronic (G) ...
DOI:
10.1016/j.carbpol.2005.10.017

11. Acidic polysaccharides isolated from marine algae inhibit the early step of viral infection

Author:
Ueno, Mikinori; Nogawa, Masato; Siddiqui, Rokeya; Watashi, Koichi; Wakita, Takaji; Kato, Nobuyuki; Ikeda, Masanori; Okimura, Takasi; Isaka, Shogo; Oda, Tatsuya; Ariumi, Yasuo
Source:
International journal of biological macromolecules 2019 v.124 pp. 282-290
ISSN:
0141-8130
Subject:
alginates,   etc   ; HIV infections; Hepatitis B virus; Hepatitis C virus; Human immunodeficiency virus 1; Primate T-lymphotropic virus 1; Vesiculovirus; algae; dose response; human cell lines; uronic acids;     Show all 11 Subjects
Abstract:
... We examined the effects of various acidic polysaccharides isolated from marine algae on the infection and replication of human immunodeficiency virus type-1 (HIV-1), hepatitis B virus (HBV), hepatitis C virus (HCV), and human T-cell leukemia virus type-1 (HTLV-1). It was found that sulfated fucan polysaccharides, ascophyllan, and two fucoidans derived from different sources significantly inhibited ...
DOI:
10.1016/j.ijbiomac.2018.11.152

12. A colon-specific delivery system for quercetin with enhanced cancer prevention based on co-axial electrospinning

Author:
Wen, Peng; Hu, Teng-Gen; Li, Lin; Zong, Min-Hua; Wu, Hong
Source:
Food & function 2018 v.9 no.11 pp. 5999-6009
ISSN:
2042-650X
Subject:
sodium alginate,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; antioxidants; apoptosis; bioactive compounds; bioavailability; chitosan; colon; colorectal neoplasms; digestive system diseases; encapsulation; flow cytometry; fluorescence microscopy; galactooligosaccharides; human cell lines; interphase; nanoparticles; neoplasm cells; prebiotics; quercetin; therapeutics;     Show all 22 Subjects
Abstract:
... The antioxidant quercetin (Q) is a bioactive compound that can inhibit colon cancer. However, its poor stability in the upper gastro-intestinal tract and low bioavailability compromised its benefits. In this study, a biopolymer-based colon-specific delivery system for Q was constructed by co-axial electrospinning. Quercetin-loaded chitosan nanoparticles (QCNP) were firstly prepared and characteriz ...
DOI:
10.1039/c8fo01216d

13. A combined process of biocatalysis and cell activity regeneration for the asymmetric reduction of 3-oxo ester with immobilized baker's yeast

Author:
Ni, Hong-Liang; Guan, Yi-Xin; Yao, Shan-Jing
Source:
Journal of chemical technology and biotechnology 2009 v.84 no.2 pp. 186-191
ISSN:
0268-2575
Subject:
calcium alginate,   etc   ; Saccharomyces cerevisiae; bakers yeast; biocatalysis; catalysts; culture media;     Show all 6 Subjects
Abstract:
... BACKGROUND: A process combining biocatalytic reaction and cell activity regeneration was designed for the asymmetric reduction of 3-oxo ester. By immobilizing resting baker's yeast (Saccharomyces cerevisiae) in calcium alginate beads, the high yield and long catalyst life were achieved in the aqueous phase in this process with methyl acetoacetate (MAA) as the model substrate.RESULTS: Two combined ...
DOI:
10.1002/jctb.2022

14. A Comparative Study of Immobilized Nitrifying and Co-Immobilized Nitrifying and Denitrifying Bacteria for Ammonia Removal from Sludge Digester Supernatant

Author:
Hill, Christopher B.; Khan, Eakalak
Source:
Water, air, and soil pollution 2008 v.195 no.1-4 pp. 23-33
ISSN:
0049-6979
Subject:
calcium alginate,   etc   ; ammonia; anaerobic digesters; denitrification; denitrifying bacteria; electrons; gases; hydrogen production; methanol; nitrification; nitrites; nitrogen; sludge;     Show all 13 Subjects
Abstract:
... Bench scale kinetic experiments were conducted to examine the use of cell immobilization in calcium alginate to remove ammonia in anaerobic sludge digester supernatant. Two systems, immobilized nitrifiers and co-immobilized nitrifiers and denitrifiers, were studied with and without the addition of methanol. Results indicated that partial nitrification (to nitrite) was achieved in both systems. The ...
DOI:
10.1007/s11270-008-9724-x

15. A comparative study of pre-ozonation and in-situ ozonation on mitigation of ceramic UF membrane fouling caused by alginate

Author:
Song, Jia; Zhang, Zhenghua; Zhang, Xihui
Source:
Journal of membrane science 2017 v.538 pp. 50-57
ISSN:
0376-7388
Subject:
alginates,   etc   ; artificial membranes; ceramics; fouling; hydroxyl radicals; microfiltration; models; molecular weight; oxidation; ozonation; ozone; ultrafiltration; water treatment;     Show all 13 Subjects
Abstract:
... Pre-ozonation or in-situ ozonation coupled with membrane filtration has been actively utilized for membrane fouling control in water treatment, however, the comparative analysis of these two ozonation processes on membrane fouling control has not been reported so far. In this study, the comparative effect of pre-ozonation and in-situ ozonation on mitigation of ceramic UF (ultrafiltration) membrane ...
DOI:
10.1016/j.memsci.2017.05.059

16. A comparative study with biologically and chemically synthesized nZVI: applications in Cr (VI) removal and ecotoxicity assessment using indigenous microorganisms from chromium-contaminated site

Author:
Ravikumar, K. V. G.; Kumar, Deepak; Rajeshwari, A.; Madhu, G. M.; Mrudula, P.; Chandrasekaran, Natarajan; Mukherjee, Amitava
Source:
Environmental science and pollution research international 2016 v.23 no.3 pp. 2613-2627
ISSN:
0944-1344
Subject:
calcium alginate,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; cell membranes; cell viability; chromium; ecotoxicology; energy-dispersive X-ray analysis; iron; lakes; microorganisms; models; pH; reactive oxygen species; scanning electron microscopy; sediments;     Show all 17 Subjects
Abstract:
... In the present communication, we report a comparative study of Cr (VI) removal using biologically synthesized nano zero valent iron (BS-nZVI) and chemically synthesized nZVI (CS-nZVI), both immobilized in calcium alginate beads. The parameters like initial Cr (VI) concentration, nZVI concentration, and the contact time for Cr (VI) removal were optimized based on Box–Behnken design (BBD) by respons ...
DOI:
10.1007/s11356-015-5382-x

17. A comparison of lipid and lipid/hydrocolloid based coatings to evaluate their effect on postharvest quality of green bell peppers

Author:
Conforti, F.D.; Ball, J.A.
Source:
Journal of food quality 2002 v.25 no.2 pp. 107-116
ISSN:
0146-9428
Subject:
alginates,   etc   ; water content; Capsicum annuum; postharvest treatment; food preservation; coatings; hydrogenated oils; gums; maltodextrins; soybean oil; cottonseed oil; food storage; shelf life; food quality; chlorophyll; ascorbic acid; dehydroascorbic acid; texture; duration; xanthan gum;     Show all 20 Subjects
Abstract:
... Maintaining quality of harvested fruit and vegetables is a challenge. The study investigated the effects of two lipid and lipid/hydrocolloid based coatings on maintaining post harvest quality of green bell peppers. Quality characteristics measured during the 4-week storage period included: respiratory rate, moisture content (weight loss), chlorophyll content, puncture force, ascorbic acid (AA) and ...
DOI:
10.1111/j.1745-4557.2002.tb01012.x

18. A comprehensive analysis of alginate content and biochemical composition of leftover pulp from brown seaweed Sargassum wightii

Author:
Kumar, Savindra; Sahoo, Dinabandhu
Source:
Algal research 2017 v.23 pp. 233-239
ISSN:
2211-9264
Subject:
alginates,   etc   ; Sargassum wightii; agar; ash content; biomass; blades; carrageenan; coasts; energy; environmental factors; feedstocks; industrial wastes; industry; macroalgae; nutrients; pulp; raw materials; seasonal variation; thallus; zero wastes;     Show all 20 Subjects
Abstract:
... Utilization of total biomass of any feedstock for integrated production of food, energy and other valuable products with zero waste is a relatively new and novel idea where abundant literature is not available. Similarly, fragmented data are available on analysis of leftover pulp after extraction of important polysaccharides from seaweeds. Seaweed industrial wastes i.e. the remaining pulp after ex ...
DOI:
10.1016/j.algal.2017.02.003

19. A conductive sodium alginate and carboxymethyl chitosan hydrogel doped with polypyrrole for peripheral nerve regeneration

Author:
Bu, Ying; Xu, Hai-Xing; Li, Xin; Xu, Wen-Jin; Yin, Yi-xia; Dai, Hong-lian; Wang, Xiao-bin; Huang, Zhi-Jun; Xu, Pei-Hu
Source:
RSC advances 2018 v.8 no.20 pp. 10806-10817
ISSN:
2046-2069
Subject:
sodium alginate,   etc   ; animal experimentation; biocompatibility; biocompatible materials; calcium; calcium carbonate; cell growth; chitosan; crosslinking; electrical treatment; gelation; hydrogels; ions; mechanical properties; modulus of elasticity; nerve regeneration; nerve tissue; polymers; porosity; pyrroles; tissue engineering;     Show all 21 Subjects
Abstract:
... Polymer materials with electrically conductive properties have good applications in their respective fields because of their special properties. However, they usually exhibited poor mechanical properties and biocompatibility. In this work, we present a simple approach to prepare conductive sodium alginate (SA) and carboxymethyl chitosan (CMCS) polymer hydrogels (SA/CMCS/PPy) that can provide suffi ...
DOI:
10.1039/c8ra01059e

20. A continuous approach to the emulsion gelation method for the production of aerogel micro-particle

Author:
Baudron, Victor; Gurikov, Pavel; Smirnova, Irina
Source:
Colloids and surfaces 2019 v.566 pp. 58-69
ISSN:
0927-7757
Subject:
alginates,   etc   ; acetic acid; aerogels; calcium chloride; carbon dioxide; centrifugation; colloids; droplet size; droplets; drying; emulsifying; emulsions; ethanol; gelation; microparticles; models; oils; rheology; solvents; surface area; surface tension;     Show all 21 Subjects
Abstract:
... Aerogel micro-particles have a wide range of applications demonstrated at lab-scale in numerous publications, but material in a larger amount needs to be produced to allow for industrial tests and prototyping. In this work, we propose a continuous emulsion-gelation process able to produce gel micro-particles in sizeable quantities, demonstrating the industrial relevance of such approach. Alginate ...
DOI:
10.1016/j.colsurfa.2018.12.055