Abstract

The minimum inhibitory concentration(MIC)of a traditional medicine containing 17 components against 9 strains of Trichophyton verrucosum and 13 strains of Malassezia pachydermatis was determined using a method recommended by the Clinical and Laboratory Standards Institute(CLSI). We also measured the MIC of each of the 17 components using the same method, and identified the main antifungal components.In order to evaluate MIC as a parameter of the antifungal effects using the microdilution method, we prepared 10% working solutions from 10% (w/v)medicines. The geometric mean MIC of the medicinal extract against T. verrucosum was 2.51%, and that against M. pachydermatis was 2.25%. The components that exhibited antifungal effects were Rheum palmatum, Glycyrrhiza uralensis, Magnolia obovata, Phellodendron amurense, and Geranium thunbergii.

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