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从灵芝中分离得到免疫活性多糖BN_3B,进一步分离纯化得到4个多糖均一体,对其中主要成分BN_3B_1及BN_3B_3进行化学研究证明,BN_3B_1为含β-(1→6)及(1→3)甙键的葡聚糖,BN_3B_3为含β-(1→6)及(1→3)甙键的阿拉伯半乳聚糖。
The immunologically active polysaccharide BN_3B was isolated from Ganoderma lucidum. Four polysaccharides were isolated and purified. Chemical studies of the main constituents BN_3B_1 and BN_3B_3 proved that BN_3B_1 contains β-(1→6) and (1→3) bonds. The glucan, BN_3B_3, is an arabinogalactan containing β-(1→6) and (1→3) triple bonds.