Preparation and characterization of zein thermo-modified starch films
文献类型: 外文期刊
第一作者: Gao, Pingping
作者: Gao, Pingping;Wang, Feng;Gu, Fengying;ning, Jiying;Liang, Jun;Li, Ningbo;Ludescher, Richard D.
作者机构:
关键词: Film;Starch;Zein;Dry heating treatment;Modification
期刊名称:CARBOHYDRATE POLYMERS ( 影响因子:9.381; 五年影响因子:8.678 )
ISSN: 0144-8617
年卷期: 2017 年 157 卷
页码:
收录情况: SCI
摘要: A new method of preparing films from zein thermo-modified starch was presented. According to data of micro-visco-amylography and rheometer, dry heating with zein significantly decreased the pasting properties of waxy corn starch and distarch phosphate, the values of G' and G '' of starches dry heated with zein decreased, while the loss tangent increased as a function of heating time. Scanning electron microscopy images showed that the surfaces of starch granules became rough after dry heating with zein, suggesting interactions between zein and the granule surface. In films made from mixtures, the starch/zein compatibility was improved through dry heating. Compared with films cast from mixtures of separately heat-treated starch and zein, films made from the starch/zein mixtures heated together possessed higher water contact angle and tensile strength. Simple dry heating with zein could thus be used as a promising modification method for improving the functionality of edible films from starches. (C) 2016 Elsevier Ltd. All rights reserved.
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