Effect of ultrasonic-assisted extraction on antioxidant activity and molecular weight distribution of polysaccharides from Schisandra Chinensis (Turcz.) baill

Author

Wang, Yanqun ; Xianjun Meng ; Li, Bin ; Sun, Xiyun ; Zhang, Qi

Author_Institution

Coll. of Food Sci., Shenyang Agric. Univ., Shenyang, China

Volume

3

fYear

2011

fDate

15-17 Oct. 2011

Firstpage

1213

Lastpage

1217

Abstract

The molecular weight distribution and antioxidant activity of polysaccharides from Schisandra chinensis (SCP) extracted by hot-water and ultrasonic pretreatment assisted were investigated, including scavenging activities against hydroxyl radical, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide anion. Obvious differences in molecular weight distribution and antioxidant activity between the hot-water extracts and ultrasonic pretreatment assisted extracts were observed. The SCP with ultrasonic pretreatment was degraded causing an increase of fractions. Both of SCP showed a noticeable scavenging activity against hydroxyl radical and DPPH, and the antioxidant activity of SCP, with ultrasonic pretreatment, was higher. However, superoxide anion scavenging activity of SCP was hardly observed.

Keywords

bioacoustics; biochemistry; botany; organic compounds; 1,1-diphenyl-2-picrylhydrazyl; Schisandra Chinensis; antioxidant activity; baill; hot water pretreatment; hydroxyl radical; molecular weight distribution; polysaccharides; scavenging activities; ultrasonic assisted extraction; Acoustics; Chemicals; Degradation; Polymers; Temperature measurement; Schisandra chinensis; antioxidant activity; molecular weight; polysaccharide; ultrasonic;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics (BMEI), 2011 4th International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-9351-7

Type

conf

DOI

10.1109/BMEI.2011.6098603

Filename

6098603