지역별 국내 자생 엉겅퀴 추출물의 항균 활성 = Comparison of the Antibacterial Activity of Domestic Cirsium japonicum Collected from Different Regions

다국어 초록 (Multilingual Abstract)

This study was investigated the antibacterial activities of Cirsium japonicum from extracts five regions(Chungnam, Gyeonggi, Gangwon, Jeju and Jeonnam) extract against six food-borne pathogenes(Bacillus cereus, Bacillus subtilis, Staphylococcus aureus, Listeria monocytogenes, Salmonella enterica and Vibrio vulnificus) using the broth dilution and agar diffusion method. At concentrations between 0 and 750μg/mL the extracts showed an antibacterial effect against all tested bacteria. The antibacterial activities of Cirsium japonicum from Jeju and Gangwon are stronger than others. The minimum inhibitory concentration(MIC) values against the six bacteria ranged from 93.75 to 750μg/mL. In time killing assay(cell growth curves), the tested bacteria inactivated upon exposure to the extracts for 24h. At the 24h exposure to the extracts, all bacteria were inhibited to over 70% for growth. In particular, Bacillus subtilis, Salmonella enterica and Vibrio vulnificus conveyed an inhibition of growth to almost complete. It is anticipated that Cirsium japonicum extracts may have greater potential as natural food preservatives.

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