RHEOLOGICAL STUDIES OF SYNERGISTIC KAPPA CARRAGEENAN-CAROB GALACTOMANNAN GELS

被引:43
作者
TURQUOIS, T
ROCHAS, C
TARAVEL, FR
机构
[1] Centre de Recherches sur les Macromolécules Végétales, CNRS, 38041 Grenoble Cedex
关键词
D O I
10.1016/0144-8617(92)90168-P
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The mechanical properties Young's modulus and yield stress of different carob galactomannan-kappa carrageenan blends have been examined using an Instron testing machine as a function of the following parameters: (1) Constant total polysaccharide concentration. (2) Galactomannan concentration for a given carrageenan concentration. (3) Carrageenan concentration for a given galactomannan concentration. (4) Galactomannan molecular weight. (5) Carrageenan molecular weight. The properties of the binary gels were compared to the kappa carrageenan gels. From the results, two types of gel structure could occur: a coupled network defined by specific junction zones (and involving unsubstituted mannose residues of the galactomannan chains) and also a gel structure with both polysaccharides associating independently.
引用
收藏
页码:263 / 268
页数:6
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