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目的:探讨藜不同的药用部位、不同的采收期的抑菌效果及抑菌物质的性质。方法:采用滤纸片扩散法和最低抑菌浓度法(MIC)研究了藜不同采收期茎、叶对大肠杆菌的抑菌效果,并采用颜色反应和紫外光谱法初步分析了抑菌物质的性质。结果:6-9月份藜叶乙酸乙酯萃取物对大肠杆菌具有抑制作用,其中7月份的抑菌作用最强。颜色反应和紫外光谱分析推断藜抑菌物质为黄酮类化合物。7月份藜叶总黄酮含量达0.016%。结论:藜药用部位为叶,采收期为7月份,其抑菌物质初步判断为黄酮类化合物。
OBJECTIVE: To study the antibacterial effect and antibacterial properties of different medicinal parts of Chenopodium album on different harvest time. Methods: The antibacterial effect of stem and leaf of Chenopodium album on Escherichia coli was studied by filter paper diffusion method and MIC method. The color reaction and ultraviolet spectroscopy were used to analyze the properties of antibacterial substance . Results: From June to September, the ethyl acetate extracts from the leaves of S. trifoliata had an inhibitory effect on Escherichia coli. Among them, the antibacterial effect was the strongest in July. Color reaction and UV spectroscopy deduced that the antimicrobial substances of the quinoa is a flavonoid compound. July flavone total flavonoids content of 0.016%. Conclusion: The medicinal parts of Chenopodium album are leaves, the harvest time is July, and the antifungal substances are initially identified as flavonoids.