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Interactions and compatibility of 11 S globulin from Vicia faba seeds and sodium salt of carboxymethylcellulose in an aqueous medium.

Abstract：

:This work studies specific interactions and compatibility between a legumin and a linear carboxylated polysaccharide using gel permeation chromatography, sedimentation analysis, SDS gel electrophoresis, viscometry and phase analysis measurements. It uses the system water/11 S globulin/CMC as a model. Carboxymethylcellulose (CMC) molecules are able to cause a partial dissociation of the protein, subsequent formation of soluble interbiopolymeric complexes and partial aggregation of the free non combined protein at room temperature and pH 6.0-6.5. The maximal binding of biopolymers is observed at their equimolar ratio. The decrease in temperature of the mixture from 293 to 277 K leads to formation of the complex coacervate. The increase in pH from 6.0 to 7.6 results in suppression of complex formation and manifestation of the phenomenon of thermodynamic incompatibility if the total concentration of biopolymers in the system exceeds the critical concentration of segregative phase separation.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Antonov YA,Dmitrochenko AP,Leontiev AL

doi

10.1016/j.ijbiomac.2005.12.011

keywords:

subject

Has Abstract

pub_date

2006-02-28 00:00:00

pages

18-24

issue

1

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(05)00270-9

journal_volume

38

pub_type

杂志文章

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