Structure and Bioactivities of Lacguer Polysaccharides from Chinese Lac Trees of Wild Species and Cultispecies

Abstract

Abstract: Two lacguer polysaccharides(LP) were isolated and purified from sap of Damu(wild species) and Xiaomu(cultispecies) lac trees in Hubei Province of China, and were analyzed by using chemical degradation, FTIR, GC, GCMS, ¹HNMR and HPGPC. The results indicated that two LP were all composed of β(1→3)D-Gal main chain with the branches having (16) linked glucuronic acid, arabinose and rhamnose. Differently, the LPfrom Damu contain branches linked with (14) and higher branching factor than that of Xiaomu. The molecular weight (M_w) was obtained to be 10.7104 and 12.5104 by HPGPC, respectively. The results obtained by intra perctoncaLINjection in mice showed that DLP and XLP have immunostimulant activities, and the DLP from Damu has a significantly higher bioactivity in motivating the growth of leucocytes than that of Xiaomu. It is regarded that the decrease in the molecular weight could lead to an enhancement of bioactivities of the DLP from Chinese lac tree of wild species.

Key words: Urushi, Lacguer polysaccharide, Chemical structure, Bioactivity

CLC Number:

O636.1

TrendMD:

DU Yu-Min, YANG Jian-Hong, KONG Zhen-Wu, XIAO Ling . Structure and Bioactivities of Lacguer Polysaccharides from Chinese Lac Trees of Wild Species and Cultispecies[J]. Chem. J. Chinese Universities, 1999, 20(3): 399.

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Structure and Bioactivities of Lacguer Polysaccharides from Chinese Lac Trees of Wild Species and Cultispecies

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