Separation of Quercentin by Pre-dispersed Solvent Extraction  

作　　者：胡伟 孙瑛 叶汝强 吴树森 刘洪来 

机构地区：[1]Department of Chemistry,East University of Science and Technology,Shanghai 200237,China

出　　处：《Chinese Journal of Chemical Engineering》2003年第3期367-370,共4页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.29736170)

摘　　要：Pre-dispersed solvent extraction (PDSE) was used to extract quercentin from its diluted solution. The influences of temperature, phase volume ratio (PVR), concentration of sodium Dodecyl benzene sulphonate and pH value etc. on the extraction efficiency were examined. It is found that, compared with traditional extraction techniques under the same condition, a higher extraction productivity can be obtained by PDSE. The stability of colloidal liquid aphrons plays an important role in this process. In a certain scope, the extraction efficiency increases with PVR. Excessive amount of solvent is not much helpful. A new analytical method by using ultraviolet spectrometer to determine the concentration of quercentin is established.Pre-dispersed solvent extraction (PDSE) was used to extract quercentin from its diluted solution. The influences of temperature, phase volume ratio (PVR), concentration of sodium Dodecyl benzene sulphonate and pH value etc. on the extraction efficiency were examined. It is found that, compared with traditional extraction techniques under the same condition, a higher extraction productivity can be obtained by PDSE. The stability of colloidal liquid aphrons plays an important role in this process. In a certain scope, the extraction efficiency increases with PVR. Excessive amount of solvent is not much helpful. A new analytical method by using ultraviolet spectrometer to determine the concentration of quercentin is established.

关 键 词：pre-dispersed solvent extraction quercentin colloidal liquid aphron SEPARATION 

分 类 号：O658.2[理学—分析化学]