【摘要】 从红缘层孔菌子实体中分离纯化－葡聚糖，ＭＷ约为２１４Ｋｄ，红外光谱证明其含β型糖普键，比旋值［α］_Ｄ^１５为＋４９°，η_ｓｐ为０．２２，凯氏定氮及紫外光谱分析证明ＦＰ_２为蛋白多糖。ＦＰ_２与刚果红络合及ＮａＯＨ浓度对其粘性行为的影响均显示β（１→３）ＧＬｃ为主链的分子特性。高碘酸氧化、Ｓｍｉｔｈ降解、甲基化分析证实ＦＰ_２确以β（１→３）ＧＬｃ为主链，其６位上带有分支点，平均每３个糖残基带有１个支链。β－消除反应表明ＦＰ_２中的蛋白质是以Ｔｈｒ－０－糖苷键及Ｓｅｒ－０－糖苷键相联。ＦＰ_２于体外对Ｓ－１８０肿瘤细胞无抑制作用。更多还原

【Abstract】 A glucan has been isolated from Pinioola Fomes fruit bodies. Its molecular weight was about 214Kd. [α] = 49°, η(SP)= 0. 22, FP2 contain 1. 8% protein. Complexformation with Congo Red and effects of concentrations of NaOH on indicated character of main chain composed of β (1→3) GLc. The structure of FP2 was determined by periodate oxidation, Smith degration, methylation, I. R etc. The main chain of FP2 is composed of β(1→3) linked GLc, Single β (1→6) linked GLc attached, on average, to every three sugar residue of the main chain. The polysacchrides combine protein by forming o-glycosidic bonds through Thr and Ser, FP2 has been examined by β-elimation. FP2 was not found the antitumor activity on the Sarcoma 180 cells.更多还原