ISO 9648:1988 高粱.鞣酸含量的测定

标准编号：ISO 9648:1988

中文名称：高粱.鞣酸含量的测定

英文名称：Sorghum — Determination of tannin content

发布日期：1988-12

标准范围

该方法包括用二甲基甲酰胺摇动提取，然后离心后，向上清液的aliqiot部分添加柠檬酸铁铵和氨，并在525nm处测定由此获得的溶液的吸光度，并使用使用单宁酸制备的校准曲线测定单宁酸含量。

The method consists in extraction by shaking with dimethylformamide, then after centrifuging, addition of ferric ammonium citrate and ammonia to an aliqiot part of the supernatant liquid and spectrometric determination, at 525 nm, of the absorbance of the solution thus obtained, and determing of the tannic content using a calibration curve prepared using tannic acid.

标准预览图