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Growth stimulation/inhibition effect of medicinal plants on human intestinal microbiota

机译:药用植物对人肠道菌群的生长刺激/抑制作用

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This experiment was carried out to determine the growth stimulation/inhibition effect of popular herbal extracts on intestinal microbiota and pathogenic bacteria. A paper disc agar diffusion method was employed for preliminary data. All extracts failed to promote intestinal microbiota growth around the discs. Green tea (Camellia sinensis) and Eleutherine americana did not produce inhibition zones against all intestinal microbiota, but inhibited Gram-positive pathogenic bacteria. All pure compounds, except eleutherin demonstrated antibacterial activity against all bacteria. Growth response of the substances on intestinal microbiota were further investigated by viable counts. Eleutherin from E. americana did not produce antibacterial antagonism against important groups of intestinal microbiota. In contrast, E. americana extract and eleutherin at minimal inhibitory concentration (MIC) and 4 MIC showed significant inhibition on growth of Grampositive pathogenic bacteria. The results indicated that both E. americana extract and eleutherin exerted dual beneficial effects to the host by regulating beneficial bacteria and inhibiting pathogenic bacteria.
机译:进行该实验以确定流行的草药提取物对肠道菌群和致病菌的生长刺激/抑制作用。纸盘琼脂扩散方法用于初步数据。所有提取物均未能促进椎间盘周围的肠道菌群生长。绿茶(茶花)和美洲大叶黄杨并未产生针对所有肠道菌群的抑制区,但抑制了革兰氏阳性致病菌。除伊卢瑟林外,所有纯净的化合物均对所有细菌均表现出抗菌活性。通过可行的计数进一步研究了该物质对肠道微生物的生长反应。美国大肠埃希氏菌素对重要的肠道菌群没有产生抗菌拮抗作用。相比之下,最小抑菌浓度(MIC)和4 MIC的美洲大肠埃希菌提取物和伊卢色林对革兰氏阳性病原菌的生长具有明显的抑制作用。结果表明,美国大肠埃希菌提取物和伊卢色林均通过调节有益细菌和抑制病原菌对宿主发挥双重有益作用。

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