摘要
用酸水解-DNS法测定莲子粗淀粉及莲子粉中的淀粉含量,操作繁琐,重现性较差。利用淀粉具有旋光性的特点,用制得的莲子淀粉纯品来求其比旋光度,结果表明,1%盐酸旋光法同样适用于莲子淀粉的测定,而且方法操作简便,准确度高。
HCI Hydrolysis-DNS method was used to determine the starch content of lotus seed crude starches and lotus seed powder, but this method was not easy to operate and had a bad property of reappearance. The characteristic that starch was optically active was adopted to require specific rotations using purified starches made from lotus seeds,and it came to the conclusion that 1 % HCI polarimetry was suitable to measure the starch content of lotus seed crude starches and lotus seed powder.This method not only operates easily but contributes to high accuracy.
出处
《食品工业科技》
CAS
CSCD
北大核心
2009年第1期306-308,共3页
Science and Technology of Food Industry
基金
江苏省高校自然科学基础研究项目(07KJD550115)
关键词
莲子
淀粉
旋光法
比旋光度
lotus seed
starch
polarimetry
specific rotation
