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Development of Soybean Protein-Isolate Edible Films Incorporated with Beeswax, Span 20, and Glycerol

文献类型: 外文期刊

作者: Zhang Chao 1 ; Ma Yue 1 ; Zhao Xiaoyan 1 ; Ma Dan 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Vegetable Res Ctr, Beijing 100097, Peoples R China

2.Shenyang Agr Univ, Coll Food Sci, Shenyang 110161, Peoples R China

关键词: disulfide bond;edible film;emulsifier;response surface analysis;soybean protein-isolate

期刊名称:JOURNAL OF FOOD SCIENCE ( 影响因子:3.167; 五年影响因子:3.376 )

ISSN: 0022-1147

年卷期: 2010 年 75 卷 6 期

页码:

收录情况: SCI

摘要: The effect of the beeswax, Span 20, and glycerol content on qualities of soybean-protein-isolate edible films was evaluated. Beeswax and Span 20 were selected to improve qualities of soybean-protein-isolate films from 11 emulsifiers. The content of beeswax, Span 20, and glycerol was further optimized by response surface analysis. The optimal composite emulsifier was beeswax (1.87% of soybean protein-isolate), Span 20 (10.25% of soybean protein-isolate), and glycerol (29.12% of soybean protein-isolate) with tensile strength of 908 MPa, percentage elongation at break of 25.8%, water vapor permeability of 19.2 g/m.d.MPa, and oxygen permeability of 0 cm(3)/m.d.MPa. The quality of soybean-protein-isolate films incorporated with the optimal composite emulsifier was 2.34 times higher than that of the control. Furthermore, the disulfide bond content of soybean-protein-isolate films showed a positive correlation with their quality, which provided a simple and rapid way to rank quality of soybean-protein-isolate films. Therefore, our result will not only give an instruction to soybean-protein-isolate-film production, but also give a simple and rapid way to rank film qualities.

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