Crude Polysaccharides Extracted from Three Characteristic Plants in Qinghai Province and Their Activities

doi:10.16333/j.1001-6880.2017.1.006

Abstract

Abstract: The crude polysaccharides were extracted from the fruits of Lyciumbar barum L., L.ruthenicum Murr.and Nitrariasibirica Pall.,collected from Qinghai,by water extraction and ethanol precipitation.The three polysaccharides had relative molecular weight distribution of 130000 to 2350000,and all were composed of mannose,rhamnose,glucuronic acid,galacturonic acid,glucose,galactose,xylose and arabinose.However,the polysaccharides were quite different on their contents of galacturonic acid,glucose and arabinose,as well as the contents of uronic acid and protein.DPPH assay indicated that the polysaccharides of N.sibirica had more potent DPPH radical scavenging activity than those of L.ruthenicum and L.barbarum,with the IC₅₀ value of 0.19 mg/mL.Besides,all the three crude polysaccharides dramatically promoted the NO secretion of macrophage,indicating that they had immuno-enhancing activity.

Key words: Lycium chinense, Lycium ruthenicum, Nitraria sibirica, polysaccharides, anti-oxidant, immuno-enhancing

CLC Number:

R284.1

ZHANG Qing-lin1,GAO Hui-qin1,LING Li-jun1,JI Chong-min2*,LU Yan1*,CHEN Dao-feng1. Crude Polysaccharides Extracted from Three Characteristic Plants in Qinghai Province and Their Activities[J]. NATURAL PRODUCT RESEARCH AND DEVELOPMENT, 2017, 29(1): 34-39.

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Crude Polysaccharides Extracted from Three Characteristic Plants in Qinghai Province and Their Activities

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