The interaction of casein micelles with κ-parrageenan studied by diffusing wave spectroscopy

被引:17
作者
Alexander, Marcela [1 ]
Dalgleish, Douglas G. [1 ]
机构
[1] Univ Guelph, Dept Food Sci, Guelph, ON N1G 2W1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
casein micelles; kappa-carrageenan; protem-polysaccharide interactions; gelation;
D O I
10.1016/j.foodhyd.2006.03.003
中图分类号
O69 [应用化学];
学科分类号
081704 [应用化学];
摘要
The light-scattering properties of mixtures of skim milk and K-carrageenan in the concentration range 0-0.1% w/v have been studied in detail. The use of diffusing wave spectroscopy (DWS) permitted the study of undiluted mixtures of skim milk and polysaccharide. The results appear to show that the movement of the casein micelles in the mixtures at 25 degrees C depends on the formation of carrageenan/casein gels, but that within the gels, the casein micelles themselves have considerable mobility. Different methods of mixing milk and carrageenan did not affect the overall conclusions, although the errors of measurement depended on the methods of mixing. Heat treatment of the milk to denature the whey proteins appeared to have no effect on the interactions of the particles and polysaccharides. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:128 / 136
页数:9
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