期刊
JOURNAL OF FOOD SCIENCE
卷 75, 期 1, 页码 H1-H4出版社
WILEY
DOI: 10.1111/j.1750-3841.2009.01381.x
关键词
digestibility; hydroxypropyl starch; nondigested carbohydrate
In vitro and in vivo digestibilities of hydroxypropyl starch were investigated to determine an appropriate on digested carbohydrate assaying method for hydroxypropyl starch. Hydroxypropyl tapioca starch (HPTS), with a 0.338 degree of substitution, was used as a hydroxypropyl starch source. Practically all nondigested carbohydrate in HPTS was low molecular weight and was not precipitated in 78% ethanol. The contents of nondigested carbohydrate in HPTS and in effluents of ileorectomized rats fed the HPTS diet obtained by the AOAC 2001.03 (enzyme-gravimetric-HPLC method) were almost the same, 56% and 59%, respectively. The recovery of hydroxypropyl groups from ileorectomy effluents was 98%. The AOAC 2001.03 method is suggested to be appropriate in determining the content of nondigested carbohydrate in hydroxypropyl starch.
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