甘草酸的提取、精制及影响因素分析

以乌拉尔甘草为原料,对甘草酸粗提和精制的众多方法进行了研究和对比,对甘草酸粗提的众多影响因素进行了深入研究。结果表明,先加酸水提法和稀氨水提取法较适合工业生产,而氨性无水乙醇提取法较适合实验室提取高纯度甘草酸。甘草酸提取的众多影响因素中,存在显著性差异的是提取温度、提取次数、提取时间、加酸量和甘草等级。

Abstract:This paper introduced the process of extracting roug h g lycyrrhizic acid from licorice with many methods,such as water extraction,ethanal solvent extraction,ammonia extraction,supercritical fluid extration and so on.The comparison of these extraction methods for isolation of g lycyrrhizic acid from licorice was also presented.Moreover,the condition of extraction about many factors,for example,the effect of extracting ag ent,temperature,time,pH valve and species were studied in this paper.The optimum extracting conditions were then obtained.