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Journal of Pharmacology and Toxicology
Year: 2009  |  Volume: 4  |  Issue: 1  |  Page No.: 41 - 44

Anti-Microbial Activities of Millingtonia hortensis Linn. Flowers Essential Oil

Chaiyasit Sittiwet    

Abstract: Millingtonia hortensis Linn. flowers have been extracted for essential oil using vapor distillation with 0.5-2% yield. The essential oil of M. hortensis Linn. was tested against various species of bacteria. The agar diffusion susceptibility test showed an inhibitory effect  on 6 out of 10 tested strains. The growth of 4 of gram-positive bacteria (S. aureus ATCC 25923, S. epidermidis ATCC12228, B. subtilis ATCC6633 and L. plantarum ATCC14917) and 2 of gram negative bacteria (E. coli ATCC25922 and P. vulgaris ATCC13315) were inhibited by M. hortensis Linn. flower essential oil. The MICs (minimal inhibitory concentration) of M. hortensis Linn. flower essential oil are 0.5-2 and 1-4 ml L-1, respectively. In this study M. hortensis Linn. flower essential oil showed broad spectrum for the anti-microbial activity at low concentration.

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