Physical properties of yoghurt manufactured with milk whey and transglutaminase

被引:81
作者
Gauche, C. [1 ]
Tomazi, T. [1 ]
Barreto, P. L. M. [1 ]
Ogliari, P. J. [1 ]
Bordignon-Luiz, M. T. [1 ]
机构
[1] Univ Fed Santa Catarina, CCA, Dept Ciencia & Tecnol Alimentos, BR-88034001 Florianopolis, SC, Brazil
关键词
Yoghurt; Milk whey; Rheology; Texture; Transglutaminase; ENZYMATIC CROSS-LINKING; FUNCTIONAL-PROPERTIES; PROTEINS; TEXTURE;
D O I
10.1016/j.lwt.2008.05.023
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The effect of milk protein polymerization prior to the yoghurt fermentation process was evaluated by enzymatic reaction with microbial transglutaminase (Streptoverticillium mobaraense). Yoghurt samples were manufactured with 100% milk or by substituting milk with 20 or 30% of liquid milk whey, aimed at determining the use of natural milk whey in dairy products. Transglutaminase was added at a protein ratio of 0.5 U g(-1) to all samples and evaluated regarding theological behavior, syneresis index and texture profile. The addition of enzyme transglutaminase contributed to syneresis prevention and increased the consistency index in yoghurt samples manufactured with milk whey. Yoghurt manufactured from 70% milk plus 20% milk whey, followed by enzymatic treatment, presented similar characteristics to traditionally manufactured yoghurt (C 100), with no alteration in the syneresis of the samples (p > 0.05) and presented texture parameters similar to the control yoghurt (C 100). (C) 2008 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:239 / 243
页数:5
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