歯科薬物療法
Online ISSN : 1884-4928
Print ISSN : 0288-1012
ISSN-L : 0288-1012
植物抽出物の口腔内細菌に対する抗菌性
安藤 和成音琴 淳一吉沼 直人鈴木 邦治伊藤 公一村井 正大滝口 俊男
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1996 年 15 巻 2 号 p. 69-73

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The purpose of this study was to determine the antimicrobial activity of plant extracts such as a crude catechin extract from green tea, black tea extract, a crude catechin extract from black tea, (-) -epigallocatechingallate (EGCg), extract from branch-bark of Morus, and Eucalyptus extract on oral microorganisms. The antimicrobial activity was measured by minimum inhibitory concentrations. Extracts from branch-bark of Morus and Eucalyptus showed strong antibacterial activity against gram-positive bacteria such as Streptococcus species, Actinomyces spesies, and L. casei, however, these compounds did not exhibit antibacterial activity less than 1600ppm against gram-negative bacteria except for P. gingivalis. Another plant extract showed a weak effect on gram-positive bacteria. All of the tested plant extracts had no antimicrobial activity less than 1600ppm against P. melaninogenica, F. nucleatum, and V. parvula.
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