期刊
CARBOHYDRATE POLYMERS
卷 47, 期 2, 页码 125-129出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0144-8617(01)00175-8
关键词
amylose; amylopectin films; permeability
The effects of water and glycerol contents on oxygen permeability of starch polymer films were investigated. Starch films were prepared of amylose and amylopectin by a casting technique and oxygen permeability was analysed at 20 degreesC. Glycerol contents were 0, 10, 20 or 30% while water content varied from 8 to 36%. Under ambient humidity both amylose and amylopectin films were excellent oxygen barriers, as good as the commercial ethylene vinyl alcohol film which was studied as a reference material. It was observed that the film permeabilities were determined by water content; below 15% water both starch films were good oxygen barriers, above 20% water the barrier property was lost. (C) 2002 Elsevier Science Ltd. All rights reserved.
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