Results 231 to 240 of about 35,946 (260)

Alkaline degradation of alginates to carboxylic acids

Carbohydrate Research, 1985
Abstract Various dicarboxylic acids related to saccharinic acids, as well as several monocarboxylic acids, formed on treatment of alginates with alkali at 95° and 135° have been identified by capillary g.l.c.-m.s. Higher concentrations of alkali facilitated the formation of glucoisosaccharinaric, anhydroisosaccharinaric, and 2-deoxy-3-C ...
Klaus Niemelä, Eero Sjöström
openaire   +1 more source

Encapsulation of fibroblasts causes accelerated alginate hydrogel degradation

Acta Biomaterialia, 2010
Calcium-alginate hydrogel has been widely studied as a material for cell encapsulation for tissue engineering. At present, the effect that cells have on the degradation of alginate hydrogel is largely unknown. We have shown that fibroblasts encapsulated at a density of 7.5 x 10(5) cells ml(-1) in both 2% and 5% w/v alginate remain viable for at least ...
Hunt NC, Smith AM, Gbureck U, Shelton RM, Grover LM   +4 more
openaire   +3 more sources

Bacterial System for Alginate Uptake and Degradation

2009
Most alginate-assimilating bacteria secrete degrading enzymes, i.e., alginate lyases, into the extracellular fraction or periplasm, and incorporate the resultant alginate oligosaccharides through their cytoplasmic membrane. The Gram-negative bacterium Sphingomonas sp.
Wataru Hashimoto, Yukie Maruyama, Takafumi Itoh, Bunzo Mikami, Kousaku Murata   +4 more
openaire   +1 more source

In vivo degradation of alginate in the presence and in the absence of resistant starch

Food Chemistry, 2015
This study evaluated the intestinal degradability of alginate during 74 days intake in pigs as models for humans. Diets contained pregelatinized starch, retrograded starch, alginate, or a mix of retrograded starch and alginate. Faeces were collected on day 1, 3, 7, 14, 39 and 74. Clear trends in intestinal alginate degradation were observed.
Jonathan, M.C., Souza Da Silva, C., Bosch, G., Schols, H.A., Gruppen, H.   +4 more
openaire   +2 more sources

Modification of alginate degradation properties using orthosilicic acid

Journal of the Mechanical Behavior of Biomedical Materials, 2012
Biopolymers such as alginates have been widely researched for clinical use. Their clinical application, however, have been limited due to their unpredictable and often rapid degradation rates. Here we show that the degradation of an alginate hydrogel can be tailored through the addition of orthosilicic acid (OSA).
Birdi, Gurpreet, Bridson, Rachel H., Smith, Alan M., Mohd. Bohari, Siti Pauliena, Grover, Liam M.   +4 more
openaire   +3 more sources

Degradation of Alginate and Polymerization of Styrene Initiated by Alginate Macroradicals under Ultrasonic Irradiation

International Journal of Polymeric Materials and Polymeric Biomaterials, 2012
Ultrasonic irradiation is a promising method used for polymer degradation and polymerization. In this study, the degradation of alginate under ultrasonic irradiation was investigated. The macroradicals produced in the degradation process were used to initiate polymerization of styrene without adding any initiators and surfactants, and copolymers of ...
Hongwu Zhang, Yanbin Cai, Changping Zhu, Bo Huang, Bolong Yao, Caihua Ni   +5 more
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Effects of radiation dose and dose rate on alginate and the use of radiation degraded alginate for peanut

International Journal of Biological Macromolecules
Aqueous solutions of alginate (4 %) with or without hydrogen peroxide (0-2 % H2O2) were irradiated under a gamma Co-60 source. The effect of dose rate on the radiation scission yield (Gs) of resulting irradiated alginate was determined. At the dose of 20 kGy, the G(s) value of irradiated alginate decreased with the increase dose rate, suggesting that ...
Binh, Nguyen Van, Sang, Hoang Dang, Diep, Tran Bang, An, Tran Xuan, Thao, Hoang Phuong, Quynh, Tran Minh   +5 more
openaire   +2 more sources

Study on degradation of alginate and crosslinking of alginate-based composite hydrogel films

2023
Incoming
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Heterogeneity of Alginate in Special Reference to the Enzymatic Degradation

The Journal of Biochemistry, 1970
S, Fujibayashi, H, Habe, K, Nishizawa
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Enzymic degradation of alginates

International Journal of Biochemistry, 1992
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