Determination of Galactosediethylmercaptal and 3,6 Anhydrogalactosediethylmercaptal with the Anthrone and Seliwanoff Reagents
作者:W. YAPHE
DOI:10.1038/183044b0
日期:1959.1
standard solution was made up from the 3,6 anhydro-L-galactosediethylmercaptal. Unfortunately the ethylmercaptan liberated on acid hydrolysis of the mercaptal interfered with colour formation in the anthrone and Seliwanoff tests. A similar interference was obtained with the diphenylamine reagent1. A method was developed to obtain from 3,6 anhydro-L-galactosediethylmercaptal, in quantitative yield, a solution
需要一些纯的 3,6 脱水-L-半乳糖作为标准,以确定这种糖在几种藻类多糖中的浓度。将其制备成结晶形式的努力没有成功。因此,标准溶液由 3,6 脱水-L-半乳糖二乙基硫醇制成。不幸的是,硫醇酸水解时释放的乙硫醇会干扰蒽酮和塞利瓦诺夫试验中的颜色形成。使用二苯胺试剂 1 获得了类似的干扰。开发了一种方法以从 3,6 脱水-L-半乳糖二乙基硫醇以定量收率获得不含乙硫醇的 3,6 脱水-L-半乳糖溶液。本通讯的目的是描述可使用比色糖试剂分析糖硫醇的方法。