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- 2018
中药佩兰体外抗病毒有效部位筛选
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Abstract:
摘要 目的:在细胞水平下,通过抗病毒实验,筛选佩兰最佳提取方法及敏感病毒株,并确定分离纯化效果最佳的大孔吸附树脂型号,为进一步分离非挥发油类抗病毒成分奠定基础.方法:先通过水提法、水提醇沉法、醇提法、醇提水沉法、乙酸乙酯提取法获得粗提物,在细胞水平下,由显微镜观察细胞病变效应(CPE),噻唑蓝(MTT)法染色,酶标仪测定吸光度值,通过比较治疗指数(TI),对肠道EV-71病毒、单纯疱疹Ⅰ型病毒、柯萨奇病毒B5、呼吸道合胞病毒进行体外抗病毒筛选;其次通过大孔吸附树脂分离法,以蒸馏水、体积分数为25%、50%、75%的乙醇作为洗脱剂冲洗树脂柱,筛选分离纯化效果最好的大孔吸附树脂.结果:经初步筛选,水提醇沉法中的沉淀对肠道EV-71病的抑制作用最强,TI为84.631;通过大孔吸附树脂法得,AB-8弱极性大孔吸附树脂对佩兰的分离纯化效果最好,其中体积分数为25%乙醇洗脱部位的TI值可达127.001.结论:体积分数为25%乙醇洗脱部位是佩兰抑制肠道EV-71病毒的最佳有效部位.
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