Class transition temperature of casein as affected by transglutaminase

被引:30
作者
Mizuno, A [1 ]
Mitsuiki, M [1 ]
Motoki, M [1 ]
机构
[1] Ajinomoto Co Inc, Food Res & Dev Labs, Kawasaki Ku, Kawasaki, Kanagawa 2108681, Japan
关键词
glass transition; casein; transglutaminase; oscillation; differential scanning calorimetry;
D O I
10.1111/j.1365-2621.1999.tb15914.x
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
The objective of this study was to determine glass transition temperature (T(g)) Of a-casein with differential scanning calorimetry (DSC) and to study the effect of microbial transglutaminase (MTG) treatment on T(g) of alpha-casein. MTG-treated alpha-casein was fractionated following the MTG treatment. After adjusting water content, T(g) measurements were made by DSC and the dependencies of T(g) on the water content determined. Oscillation DSC (ODSC) was also used. The determination of T(g) of MTG-treated samples by conventional DSC was unreliable. However, by comparing with ODSC data, their T(g) could be defected. The MTG treatment elevated the T(g) alpha-casein, which may be the reason for improved stability of dry dairy products during storage.
引用
收藏
页码:796 / 799
页数:4
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