黄皮甲醇提取物的抑真菌作用研究

采用生长速率法测定了黄皮植株甲醇提取物对香蕉炭疽病菌等12种植物病原真菌的生物活性.研究结果表明：黄皮植株甲醇提取物，对香蕉炭疽病菌和辣椒炭疽病菌等有一定的活性；在10 mg/mL的浓度下，黄皮果核、树皮、枝叶和花索的甲醇提取物，对香蕉炭疽病菌菌丝生长的抑制率分别为88.83％、84.61％、72.23%和50.11％；黄皮果核甲醇提取物对香蕉炭疽病菌的EC₅₀为4.34 mg/mL。黄皮果核甲醇提取物的石油醚、氯仿、乙酸乙酯和正丁醇萃取组分对香蕉炭疽病菌的活性研究表明，氯仿层的活性最高，抑制率为86.11％。黄皮果核甲醇提取物的氯仿萃取物对香蕉炭疽病菌的EC₅₀为2.37 mg/mL。

Antifungal activity of the methanol extract of Clausena lansium

The activity of the methanol extract of Clausena lansium (Lour.) Skeels was assayed against 12 kinds of fungi using growth rate methods. The results showed that all methanol extracts displayed antifungal activities against Colletotrichum musae to some extent. The inhibition rate of the methanol extracts of the stone, cortex, leafstalk and scape of C. lansium against C. musae were 88.83%, 84.61%, 72.23% and 50.11% at 10 mg/mL, respectively. The EC₅₀ of the methanol extract of the stone against C. musae is 4.34 mg/mL. The antifungal activities of petroleum ether, trichloromethane, ethyl acetate, n butanol extracts against Rhizoctonia solani were also tested, and the results showed that the highest activity was seen in trichloromethane extract, with an inhibitory rate of 86.11%. The EC₅₀ of trichloromethane extract was 2.37 mg/mL.