文献类型： 外文期刊
作者： Li, Li 1 ; Chen, Hongpu 3 ; Wang, Min 1 ; Lv, Xiaolan 1 ; Zhao, Yongfu 1 ; Xia, Liru 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China
2.Minist Agr, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing, Jiangsu, Peoples R China
关键词： Biodegradable film; Co-60 gamma ray; Corn starch; Irradiation
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： 2018 年 194 卷
页码：
收录情况： SCI
摘要： The effect of Co-60 gamma ray irradiation on the physicochemical and crystalline properties of native corn starch were investigated. Fourier transform infrared spectroscopy and X-ray diffraction showed that irradiation had a slight effect on the molecular structure of corn starch with crystallinity decreasing with increasing irradiation dose. Particle size analysis showed that 59.1% of native corn starch granules had sizes of >= 8 mu m, which decreased to only 24.1% after treatment with an irradiation dose of 40 kGy. Irradiated-corn-starch films were prepared by casting gelatinized irradiated-corn-starch solutions. An increased irradiation dose was found to increase the tensile strength of the resultant films, but caused a significant decrease in water vapor permeability. The irradiated-corn-starch films showed potential for the development of biodegradable starch films with improved properties.
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