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Synthesis and properties of fish protein‐based hydrogel
Author(s) -
Hwang DerChyan,
Damodaran Srinivasan
Publication year - 1997
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-997-0041-0
Subject(s) - glutaraldehyde , self healing hydrogels , chemistry , ethylenediaminetetraacetic acid , fish <actinopterygii> , disulfide bond , ionic strength , polymer chemistry , chemical engineering , biochemistry , chromatography , aqueous solution , organic chemistry , chelation , fishery , engineering , biology
The novel use of fish protein (FP) in the manufacture of a superabsorbent hydrogel was investigated. Following the introduction of a large number of hydrophilic groups into fish protein by modification with ethylenediaminetetraacetic dianhydride (EDTAD), proteins were cross‐linked by sulfhydryl‐disulfide interchange reaction between the endogenous sulfhydryl groups and disulfide bonds to produce an insoluble gel structure. The water uptake of 76% EDTAD‐modified FP hydrogel was 540 g water/g dry gel at 214 × g , and it depended on pH and ionic strength of the solution. The structural changes in proteins consequent to modification were also investigated. EDTAD‐FP hydrogels had increased rigidity after glutaraldehyde treatment but displayed diminished water uptake characteristics.