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期 刊 ：中国中药杂志 1994年 19卷 05期 页码：283.

关键词：正交法；甘草浸膏；提取工艺；

Keywords:orthogonal method:licorice root extract, extracting techniques,

摘 要 ：采用正交法设计L₉(3⁴)表,考察了甘草粒度、提取溶媒、提取次数等3个因素,以甘草酸收率为考察指标,比较甘草浸膏的提取工艺。结果表明:甘草以机械切片,用含氨0.3%的60%乙醇作溶媒进行回流提取3次,甘草酸的收率可达10%以上,比水提法的收率提高7%左右。

Abstract:A L₉(3⁴) form developed by the orthogonal method was used to study the size,extraction solvent and extrac-tion frequency of licorice root extract,and taking the recovery of glycyrrhizic acid as the criteria,a comparison wasmade on the different ways of extracting the herb. The result showed that glycyrrhizic acid could be recovered over10%(about 7%higher than that from water treatment) when the herb was, cut into pieces and then extracted byfluxing for 3 times with 60%alcohol containing 0.3%ammonia.

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