生姜色素的提取方法比较

为开发生姜色素类制品，合理选择生姜色素提取工艺提供参考，采用了4种方法分别提取生姜的色素，水提取、3次乙醇回流提取、索氏提取器提取和超声波提取，再以紫外光度法测定其含量，确定最佳提取方法为索氏有机溶剂提取法，基本操作参数为：用10倍于生姜的85％的乙醇，对生姜粉进行180min浸提，提取率在90％以上。

Comparison of ginger pigment- extracting methods

In order to develop the products of ginger pigment series, ginger pigment-extracting technology is used and four kinds of pigment-extracting methods are carried out. They are water extraction, three usages of ethanol extraction, Suoshi extraction, and ultrasonic extraction. Then with the ultraviolet ray spectrum method, pigment's content can be tested out. The final results prove that Soushi organic solvent extraction method is the best. The basic operation par aments are in the following: ingredients: one portion of ginger, ten portions of alcohol with an 85% density; immersing time: 180 mines; extracting rate: over 90%.