经过定性实验确定榅桲中含生物碱,用分光光度法测定榅桲果实总生物碱含量为1.2%。又对榅桲果实生物碱粗提物对几种常见菌株进行体外抑菌实验。结果表明,榅桲果实生物碱粗提物对大肠杆菌、金黄色葡萄球菌、枯草芽孢杆菌有一定的抑制作用,但对黑曲霉、根霉、青霉和酵母菌的抑制效果不太明显。 After qualitative experiments to determine the alkaloids contained in 榅 桲, spectrophotometric determination of the total alkaloid content of 榅 桲 fruit was 1.2%. In addition, we also carried out in vitro antibacterial activity test on several common strains of crude extract of Alsophila spinulosa. The results showed that the extract of the fruit alkaloids extract of Escherichia coli, Staphylococcus aureus, Bacillus subtilis have some inhibitory effect on Aspergillus niger, Rhizopus, Penicillium and yeast inhibition is not obvious.