|Title:||Antibacterial Activity of Leaf Essential Oils and Their Constituents from Cinnamomum Osmophloeum||Authors:||CHANG, SHAN-CHWEN||Keywords:||antibacterial activity;cinnamaldehyde;Cinnamomum osmophloeum;essential oil;leaf||Issue Date:||2001||Journal Volume:||v.77||Journal Issue:||n.1||Start page/Pages:||123-127||Source:||JOURNAL OF ETHNOPHARMACOLOGY||Abstract:||
The antibacterial activities of the essential oils from leaves of two Cinnamomum. osmophloeum clones (A and B) and their chemical constituents were investigated in this study. The nine strains of bacteria, including Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus (MRSA), Klebsiella pneumoniae, Salmonella sp., and Vibrio parahemolyticus, were used in the antibacterial tests. Results from the antibacterial tests demonstrated that the indigenous cinnamon B leaf essential oils had an excellent inhibitory effect. The MICs (minimum inhibitory concentrations) of the B leaf oil were 500 mug/ml against both K. pneumoniae and Salmonella sp. and 250 mug/ml against the other seven strains of bacteria. Cinnamaldehyde possessed the strongest antibacterial activity compared to the other constituents of the essential oils. The MICs of cinnamaldehyde against the E. coli, P. aeruginosa, E. faecalis, S. aureus, S. epidermidis, MRSA, K. pneumoniae, Salmonella sp., and V. parahemolyticus were 500, 1000, 250, 250, 250, 250, 1000, 500, and 250 mug /ml, respectively. These results suggest that C. osmophloeum leaf essential oil and cinnamaldehyde are beneficial to human health, having the potential to be used for medical purposes and to be utilized as anti- bacterial additives in making paper products. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
|Appears in Collections:||醫學系|
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