期刊
CARBOHYDRATE POLYMERS
卷 154, 期 -, 页码 112-120出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.08.034
关键词
Starch blend film; Plasticizer; Starch molecular profile; Mechanical properties
资金
- Kasetsart University, Thailand
- Faculty of Agro-Industry, Kasetsart University, Thailand
The main objective of the study was to gain insight into structural and mechanical starch behaviors of the plasticized starch blend films. Mechanical properties and starch behaviors of cassava (CS)/and mungbean (MB) (50/50, w/w) starch blend films containing glycerol (Gly) or sorbitol (Sor) at 33% weight content were investigated. It was found that tensile strength TS and %E of the Gly-CSMB films were similar to those of MB films; but%E of all Sor-films was identical. TS of plasticized films increased when AM content and crystallinity increased. When Sor was substituted for Gly, crystallinity of starch films and their TS increased. The CSMB and MB films had somewhat a similar molecular profile and comparable mechanical properties. Therefore, it was proposed the starch molecular profile containing amylopectin with high M-w, low M-w of amylose, and the small size of intermediates may impart the high TS and (M) over tilde (w) of starch films. (C) 2016 Elsevier Ltd. All rights reserved.
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