Study on Extraction Process of Components with Free Radical Scavenging Activity from Polygonum multiglorum Thunb

FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (8): 197-200.

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Study on Extraction Process of Components with Free Radical Scavenging Activity from Polygonum multiglorum Thunb

LU Li-Shuang , LU Hui-Hui , MA Hai-Tao

Department of Food Science and Technology,College of Jinling,Nanjing Normal University,Nanjng 210097,China

Online:2008-08-15 Published:2011-08-26

Abstract

Abstract: Objective:To study the extraction process of effective components for scavenging free radical from Polygonum multiglorum Thunb. Methods:Response surface methodology(RSM) was applied to study effects of extraction temperature,ethanol concentration,extraction time and solid to liquid ratio on extraction yield of anthraquinone and stilbene glycoside as well as clearance rate of the extracts to DPPH radical. Results:The optimal extraction conditions are:temperature 62 ℃,ethanol concentration 81%,extraction time 60 min and solid to liquid ratio 10:1. Under these conditions,the yields of anthraquinone and stilbene glycoside are 1.06% and 5.03% respectively,and the clearance rate to DPPH is 58.7%.

Key words: Polygonum multiflorum Thunb, anthraquinone, stilbene glucoside, free radical .. ..

LU Li-Shuang , LU Hui-Hui , MA Hai-Tao. Study on Extraction Process of Components with Free Radical Scavenging Activity from Polygonum multiglorum Thunb[J]. FOOD SCIENCE, 2008, 29(8): 197-200.

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Study on Extraction Process of Components with Free Radical Scavenging Activity from Polygonum multiglorum Thunb

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