Journal
CARBOHYDRATE POLYMERS
Volume 83, Issue 4, Pages 1947-1951Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.10.066
Keywords
PLBP; Animal; DEAE-cellulose column; Antioxidant; DPPH
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The purpose of this study was to investigate the protective effect of purified Lycium barbarum polysaccharides (PLBP) against tissue oxidative injury. Lycium barbarum polysaccharides were isolated from dried Lycium barbarum fruit fruits by boiling water. Crude polysaccharides were divided into seven small fractions and one major fraction using DEAE-cellulose column. Major fraction, namely purified Lycium barbarum polysaccharides (PLBP), was analyzed. Results indicated that the average molecular weight of PLBP was 1.21 x 105 Da. The carbohydrate-related absorbances appeared at 3400.38, 2930.49. 1629.66, 1411.40, 1151.44, 1078.24, 1032.50, 920.72, 864.33, 817.08, and 777.04 cm(-1). Then, strong DPPH radical scavenging activity of PLBP was detected. In addition, after the oral administration of LPBP to animals for 30 days, levels of malondialdehyde (MDA) and antioxidant enzymes activities in skins markedly reduced or increased in aged animals. The results clearly demonstrated that PLBP possessed an antioxidant activity and protective effect against skin oxidative injury. (C) 2010 Elsevier Ltd. All rights reserved.
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