菏泽地区2种菊科植物的抑菌作用研究

Study on Bacteriostasis of Two Kinds of Compositae in Heze Region

[目的]探讨苦荬菜和苦菜提取液的抗菌性能。[方法]以苦荬菜和苦菜为供试材料,枯草芽孢杆菌、金黄色葡萄球菌和大肠杆菌为供试菌种,采用滤纸片法研究苦荬菜和苦菜提取液对这3种常见菌的抑制作用。[结果]苦荬菜和苦菜的提取液对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌均具有一定的抑菌作用。其中苦荬菜提取液对金黄色葡萄球菌的抑菌作用较强,而苦菜提取液则对大肠杆菌有较强抑菌作用。2种提取液对枯草芽孢杆菌的抑菌作用相对弱些。2种试验材料含有较强的抑菌物质,最低抑菌浓度在10%以下。二者的提取液对葡萄的保鲜有一定作用。[结论]该研究为植物提取物在果蔬保鲜上的进一步开发应用奠定了基础。

[Objective] The aim was to discuss the antibacterial performance of Prenanhes sonchifolia and Prenanthes chinensis extracts. [Method] With P. sonchifolia and P. cbinensis as tested materials, Bacillus subitilis, Staphylococcus aureus and Escherichia coli as tested bacteria, the inhibition of P. sonchifolia and P. chinensis extracts on the 3 kinds of common bacteria were studied by filter paper method. [ Result ] P. sonchifolia and P. chinensis extracts all had certain antibacterial effect on E. coli, S. aureus and B. subitilis. Among them, P. sonchifolia extract had stronger antibacterial effect on S. aureus, while P. chinensis extract had stronger antibacterial effect on E. coli. The 2 kinds of extracts had relative poorer antibacterial effect on B. subitilis. The 2 kinds of experimental materials contained stronger antibacterial substance and the minimum inhibitory concn, was under 10%. The 2 kinds of extracts had certain effect on fresh-keeping for grape. [ Conclusion] The research laid the foundation for the further development and application of plant extracts on fruits and vegetables preservation.