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Zhongguo Zhong Yao Za Zhi ; 40(11): 2112-6, 2015 Jun.
Article in Chinese | MEDLINE | ID: mdl-26552165

ABSTRACT

Astragalus polysaccharide has been widely used in food and medicinal industry owing to its health-promoting properties. In order to characterize better the relationship among molecular weight, structure-activity and activities, a simple method was used different concentration of ethanol including 30% (PW30), 50% (PW50), 70% (PW70), 75% (PW75), 80% (PW80) and 90% (PW90) to precipitate Astragalus polysaccharides into different molecular weight. As a result, PW90 showed smooth surface and the strongest antioxidant activity among these six fractions (P < 0.05). In conclusion, graded ethanol precipitation was a simple method to separate Astragalus polysaccharides into different molecular weight with different antioxidant activity fractions.


Subject(s)
Antioxidants/pharmacology , Astragalus Plant/chemistry , Polysaccharides/chemistry , Chemical Precipitation , Ethanol/chemistry , Polysaccharides/pharmacology
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