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首页> 外文期刊>Separation and Purification Technology >Separation of glycyrrhizic acid and liquiritin from Glycyrrhiza uralensis Fisch extract by three-liquid-phase extraction systems
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Separation of glycyrrhizic acid and liquiritin from Glycyrrhiza uralensis Fisch extract by three-liquid-phase extraction systems

机译：三液相萃取系统分离甘草Fisch提取物中的甘草酸和甘草酸

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摘要

Some stable three-liquid-phase extraction systems have been used for isolation and separation of glycyrrhizic acid (GA) and liquiritin (LQ) in aqueous Glycyrrhizia uralensis Fisch extract.Partition behaviors of two compounds were investigated at various conditions.Organic extractants and the pH of solution were two main factors to affect their partitioning among the phases and separation strategies.Different extraction profiles showed that the stronger the electron-donating capability of extractants,the higher the upper-limit of pH in the region for co-extracting GA and LQ,and the higher the lower-limit of pH in the region for stripping GA or LQ from the organic phase.Of all the investigated systems,the three-liquid-phase system containing poly(ethylene glycol-ran-propylene glycol) (EOPO2500) and tri-butyl phosphate (TBP) was the most suitable for separation and purification of licorice extract.FTIR and fluorescence spectroscopic investigations showed that hydrogen bond interaction and hydrophobic interaction among the phases were the main driving forces to affect the partition behaviors of two compounds.
机译：某些稳定的三相液相萃取系统已用于分离和分离甘草水菲施提取物中的甘草酸（GA）和甘草酸（LQ），研究了两种化合物在不同条件下的分配行为有机萃取剂和pH溶液的存在是影响它们在各相之间分配和分离策略的两个主要因素。不同的萃取曲线表明，萃取剂的给电子能力越强，共同萃取GA和LQ的区域中pH的上限就越高。 ，并且从有机相中汽提GA或LQ的区域中pH的下限越高。在所有研究的系统中，包含聚乙二醇-丙二醇（EOPO2500）的三相系统FTIR和荧光光谱研究表明，氢键相互作用和磷酸根丁酯（TBP）最适合于甘草提取物的分离和纯化。相之间的疏水相互作用是影响两种化合物分配行为的主要驱动力。

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