COLORIMETRIC METHOD FOR STARCH DETERMINATION

被引：10

作者：

GUR, A

COHEN, A

BRAVDO, BA

机构：

[1] Faculty of Agriculture, Hebrew University, Rehovot

[2] Volcani Institute of Agricultural Research, Bet-Dagan

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1969年 / 17卷 / 02期

关键词：

D O I：

10.1021/jf60162a009

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Starch was determined in the wood, bark, and leaves of various tree species by two methods. The first one wasbased on the precipitation of starch with iodine, its subsequent hydrolysis, and determination of the reducing sugar set free. The other method made use of the colorimetric determination of starch with iodine. Based on results obtained with the first method, colorimetric calibration curves were constructed for the tested starches of various origins. The curves for different genera varied significantly, whereas no such differences were established for different citrus species or different varieties belonging to the same species. Factors were calculated for the colorimetric determination of the tested starches based on values for potato starch. A method was developed for the calculation of the amylose-amylopectin ratio, based on colorimetric calibration curves for various starches. © 1969, American Chemical Society. All rights reserved.

引用

页码：347 / &

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