高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (3): 399.

• 论文 • 上一篇    下一篇

野生和人工栽培漆树液多糖的分子结构与生物活性

杜予民, 杨建红, 孔振武, 肖玲   

  1. 武汉大学环境科学系, 武汉 430072
  • 收稿日期:1998-04-17 出版日期:1999-03-24 发布日期:1999-03-24
  • 通讯作者: 杜予民,男,60岁,教授,博士生导师.
  • 作者简介:杜予民,男,60岁,教授,博士生导师.
  • 基金资助:

    国家自然科学基金(批准号:59573028)资助课题

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

DU Yu-Min, YANG Jian-Hong, KONG Zhen-Wu, XIAO Ling   

  1. Department of Environmental Science, Wuhan University, Wuhan, 430072
  • Received:1998-04-17 Online:1999-03-24 Published:1999-03-24

摘要: 从湖北毛坝野生(大木)和人工栽培(小木)漆树液中分离纯化出酸性杂多糖D-LP和X-LP,化学降解和光谱分析表明两种多糖均含有D-Gal、D-GlcA、L-Ara和L-Rha,其摩尔比分别为77:18.3:3.7:1和63.7:13.3:3.9:1.两种漆多糖都是以β(1→3)D-Gal为主链的高度支化酸性杂多糖.D-LP支化度较高,分支点在Gal的C6和C4位;而X-LP仅有部分主链D-Gal的C6位发生支化.小鼠腹腔注射试验表明,两种漆多糖均具有明显的免疫抑制作用,同时由野生漆树液提取的D-LP显示出比X-LP更高的免疫抑制功能和升白细胞活性功能.

关键词: 生漆, 漆多糖, 化学结构, 生物活性

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 (Mw) 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

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