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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→３Ｄ－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
The acidic heteropolysaccharides D-LP and X-LP were isolated and purified from the wild (large wood) and artificially cultivated (small wood) lacquer sap from Hubei MaoBa. Chemical degradation and spectral analysis showed that both polysaccharides contained D-Gal, D-GlcA, L-Ara and L-Rha at a molar ratio of 77:18.3: 3.7: 1 and 63.7: 13.3: 3.9: 1, respectively. Both lacquer polysaccharides are hyperbranched acidic heteropolysaccharides with β (1 → 3D-Gal as the main chain.) D-LP has a higher degree of branching at the C6 and C4 positions of Gal, while X-LP Only part of the main chain of D-Gal C6 branching occurred in mice intraperitoneal injection tests showed that both polysaccharides have significant immunosuppressive effect, while D-LP extracted from the wild tree fluid showed X-LP Higher immunosuppressive and leukocyte-activating functions