Chemical modification strategies for synthesis of protein-based hydrogel

被引:66
作者
Hwang, DC [1 ]
Damodaran, S [1 ]
机构
[1] UNIV WISCONSIN, DEPT FOOD SCI, MADISON, WI 53706 USA
关键词
chemical modification; protein; hydrogel; soy protein;
D O I
10.1021/jf9503826
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
A soy protein-based hydrogel capable of imbibing a large amount of water was synthesized by first modifying the lysyl residues of soy protein isolate (SPI) with ethylenediaminetetraacetic dianhydride (EDTAD) followed by cross-linking with glutaraldehyde. Modification of SPI with EDTAD at pH 9 resulted in polymerization involving intramolecular cross-linking of soy 11S and 7S globulin, which decreased the number of carboxyl moieties introduced per lysyl residue and impaired the swellability of the hydrogel. Pretreatment of SPI involving heating for 30 min at 65 degrees C and pH 12.0 followed by modification with EDTAD at 25 degrees C/pH 12 did not result in polymerization and, under these conditions, about 3.3 carboxyl moieties/lysyl residue were incorporated into the protein. The hydrogel prepared under these conditions was able to absorb more than 105 g of water/g of dry gel. The structural changes in SPI caused by the modification and its relevance to swelling properties of the gel are discussed.
引用
收藏
页码:751 / 758
页数:8
相关论文
共 25 条
[1]   MODIFICATION OF PHYSICAL-PROPERTIES OF SOY PROTEIN ISOLATE BY ACETYLATION [J].
BARMAN, BG ;
HANSEN, JR ;
MOSSEY, AR .
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 1977, 25 (03) :638-641
[2]  
BYE CN, 1979, Patent No. 4141745
[3]   CIRCULAR DICHROIC ANALYSIS OF PROTEIN CONFORMATION - INCLUSION OF BETA-TURNS [J].
CHANG, CT ;
WU, CSC ;
YANG, JT .
ANALYTICAL BIOCHEMISTRY, 1978, 91 (01) :13-31
[4]  
CHEN CC, 1985, TEXTILE SCI TECHNOLO, V7, P197
[5]  
Coco C. E., 1986, US Patent, Patent No. [US4607089A, 4607089]
[6]   FACTORS GOVERNING LYSINOALANINE FORMATION IN SOY PROTEINS [J].
FRIEDMAN, M ;
LEVIN, CE ;
NOMA, AT .
JOURNAL OF FOOD SCIENCE, 1984, 49 (05) :1282-1288
[7]   OBSERVATIONS ON USE OF 2,4,6-TRINITROBENZENESULFONIC ACID FOR DETERMINATION OF AVAILABLE LYSINE IN ANIMAL PROTEIN CONCENTRATES [J].
HALL, RJ ;
TRINDER, N ;
GIVENS, DI .
ANALYST, 1973, 98 (1170) :673-686
[8]   POLYMERS AS SOLID-WASTE IN MUNICIPAL LANDFILLS [J].
HAMILTON, JD ;
REINERT, KH ;
HAGAN, JV ;
LORD, WV .
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION, 1995, 45 (04) :247-251
[9]   DEWATERING OF BIOLOGICAL SLURRY BY USING WATER-ABSORBENT POLYMER GEL [J].
HUANG, X ;
AKEHATA, T ;
UNNO, H ;
HIRASA, O .
BIOTECHNOLOGY AND BIOENGINEERING, 1989, 34 (01) :102-109
[10]  
JANE J, 1994, ACS SYM SER, V575, P92