本文首次采用滤纸片法对泡桐花提取液的不同萃取部分进行了体外抑菌试验并用紫外分光光度法对泡桐花的花冠和花萼中总黄酮含量进行了测定。结果表明不同萃取部分对金黄色葡萄球菌,大肠杆菌,枯草芽孢杆菌均有不同程度的抑制作用,其中对金黄色葡萄球菌作用最强,而对黑曲霉,啤酒酵母,产黄青霉无明显抑制作用。含量测定表明花萼中黄酮含量明显高于花冠。 In this paper, the filter paper method was used for the first time on the different extractive parts of the paulownia flower extract in vitro antibacterial test and UV spectrophotometry was used to determine the total flavonoid content in Paulownia flower corolla and flower pods. The results showed that different extracts had different degrees of inhibition on Staphylococcus aureus, Escherichia coli, and Bacillus subtilis. Among them, Staphylococcus aureus had the strongest effect, but no significant inhibition was observed against Aspergillus niger, Brewer’s yeast, and Penicillium chrysogenum. effect. Content determination showed that the content of flavonoids in flower buds was significantly higher than that of corollas.