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Therapeutic Effects of Essential Oil from Waste Leaves of <i>Psidium guajava</i>L. against Cosmetic Embarrassment Using Phylogenetic Approach

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American Journal of Plant Sciences 2012年第6期3卷 745-752页

作者： Ahsan Kamran Rohit Mishra Rita Gupta Awadhesh Kumar Ashok Bajaj Anupam Dikshit Biological Product Laboratory Department of Botany University of Allahabad Allahabad India Department of Dermatology and Veneral Diseases M.L.N.Medical College Allahabad India. Department of Horticulture Aromatic & Medicinal Plants Mizoram University Aizawl India

Medicinal plants are facing threats due to loss of habitat and overexploitation of knows species. Therefore the present work shows utilization of essential oil from discarded leaves of Psidium guajava Linn. against human dermatophytic fungi Trichophyton rubrum, T. mentagrophytes, Trichophyton violaceum, Trichophyton tonsurans, Epidermophyton floccosum, Microsporum gypseum and Microsporum canis. The oil was found to be fungicidal at 3.0 μl/ml and it tolerated heavy inoculum of pathogens at fungicidal concentrations. The fungicidal activity of the oil was thermostable, up to 70°C and shelf life was found to be six months, which was maximum the time taken into consideration. The oil having cineole, caryophyllane, copaene, azulene and eucalyptol as main constituents, exhibited broad fungicidal activity. The oil did not show any adverse effect on mammalian skin upto 5% concentration. Phylogeny of the dermatophytes with respect to toxicity of the oil has also been discussed using molecular data. The cost effective formulation from waste leaves can be exploited after undergoing double blind successful multicentral topical testing.

关键词： Essential Oil Dermatophytes Phylogeny Discarded Leaves Psidium guajava L. Trichophyton rubrum T. mentagrophyte

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