Graded ethanol precipitation method on physicochemical properties and antioxidant activities of polysaccharides extracted from Astragalus Radix.
- Author:
Hong-fa LI
;
Song-bo GUO
;
Shu-li MAN
;
Ya-ya FAN
;
Ting-ting WANG
;
Xia LI
;
Wen-yuan GAO
- Publication Type:Journal Article
- MeSH:
Antioxidants;
pharmacology;
Astragalus Plant;
chemistry;
Chemical Precipitation;
Ethanol;
chemistry;
Polysaccharides;
chemistry;
pharmacology
- From:
China Journal of Chinese Materia Medica
2015;40(11):2112-2116
- CountryChina
- Language:Chinese
-
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.
