Isolation and Antioxidant Activity of Water-soluble Acidic Polysaccharide from Prunella vulgaris Linn

doi:10.7506/spkx1002-6630-201001021

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (1): 91-94.doi: 10.7506/spkx1002-6630-201001021

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Isolation and Antioxidant Activity of Water-soluble Acidic Polysaccharide from Prunella vulgaris Linn

WEI Ming，XIONG Shuang-li*，JIN Hong，XU Guo-bo，XIA Cui

College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China

Received:2009-04-07 Online:2010-01-01 Published:2014-05-19
Contact: XIONG Shuang-li*， E-mail:xiongshuangli@swust.edu.cn

Abstract

Abstract:

An acidic polysaccharide with antioxidant activity was obtained from Prunella vulgaris Linn through sequential steps of water extraction and alcohol precipitation, then decolorization and deproteinization by HZ-820-type unpolar resin adsorption, and finally purification. 3-Hydroxydiphenyl-sulfuric acid and barium chloride-gelatin turbidimetric methods were used to determine contents of galacturonic acid and sulfate in the polysaccharide, and the results were (58.85 ± 0.46)% and (7 ± 0.52)%, respectively. Ultraviolet and infrared (IR) spectral analyses indicated that the monosaccharide composition of the polysaccharide consisted of galacturonic acid, xylose, glucose, rhamnose, and galactose and it belonged to the nonglycoprotein family. Moreover, this polysaccharide revealed strong scavenging activities against hydroxyl free radicals and DPPH free radicals.

Key words: Prunella vulgaris Linn, acidic polysaccharide, isolation and purification, antioxidation

CLC Number:

TQ929.2

WEI Ming，XIONG Shuang-li*，JIN Hong，XU Guo-bo，XIA Cui. Isolation and Antioxidant Activity of Water-soluble Acidic Polysaccharide from Prunella vulgaris Linn[J]. FOOD SCIENCE, 2010, 31(1): 91-94 https://doi.org/10.7506/spkx1002-6630-201001021

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Isolation and Antioxidant Activity of Water-soluble Acidic Polysaccharide from Prunella vulgaris Linn

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