论文部分内容阅读
开发药用植物首先必须确定其活性部位.我们采用微量热法鉴定了一种植物Vitex negundo Linn的四种不同提取物:正己烷提取物、氯仿提取物、乙酸乙酯提取物和甲醇提取物对大肠杆菌(E.coli)的抑制作用.结果表明甲醇提取物对大肠杆菌生长的代谢热谱抑制作用最强.通过计算该提取物作用下大肠杆菌的生长速率常数,表明该提取物的抑制作用随浓度的升高而增强.
To develop a medicinal plant, it is first necessary to determine its active site. We have identified four different extracts of a plant, Vitex negundo Linn, using microcalorimetry: n-hexane extract, chloroform extract, ethyl acetate extract, and methanol extract pair. Inhibition of E.coli. The results show that the methanol extract has the strongest inhibitory effect on the metabolic thermogram of E. coli growth. The inhibition rate of the extract is shown by calculating the growth rate constant of E. coli under the action of the extract. Increases with increasing concentration.