Properties of thermally-treated wheat gluten films

被引：72
|
作者：
Ali, Y [1 ]
Ghorpade, VM [1 ]
Hanna, MA [1 ]
机构：
[1] UNIV NEBRASKA,DEPT BIOL SYST ENGN,IND AGR PROD CTR,LINCOLN,NE 68583
来源：
INDUSTRIAL CROPS AND PRODUCTS | 1997年 / 6卷 / 02期
关键词：
wheat gluten film; water vapor permeability; film property;
D O I：
10.1016/S0926-6690(97)00216-1
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Effects of thermal treatments on selected properties of wheat gluten film were studied. Films were cast from heated alkaline aqueous solutions of wheat gluten, ethanol and glycerin and subsequently heat treated at 65, 80, or 95 degrees C for 2, 4, 6, 12, 18, or 24 h. Water vapor permeability (WVP), Hunter L, a and b values, tensile strength (TS) and elongation at break (E) were determined and compared with untreated film (control). Significant reduction in WVP of film occurred with increasing curing temperature and exposure time. Hunter L value (whiteness) decreased, whereas a (redness) and b (yellowness) values increased with increasing heat treatment temperature and exposure time. Also, an increase in TS and a decrease in E were present with increasing treatment temperature and exposure time. (C) 1997 Elsevier Science B.V.
引用
收藏
页码：177 / 184
页数：8
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