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Studies on Biological Activities of Woody Essential Oils( I ) - Antimicrobial Activity of Essential Oils from Coniferous Needles -  

Lee, Sung-Suk (Korea Forest Research Institute)
Kang, Ha-Young (Korea Forest Research Institute)
Choi, In-Gyu (Korea Forest Research Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.30, no.1, 2002 , pp. 48-55 More about this Journal
Abstract
The essential oils were extracted from the needles of several softwood tree species, Pinus densiflora, Pinus koraiensis, Chamaecyparis obtusa and Chamaecyparis pisifera to investigate their biological activities. The antifungal activity by hyphal growth inhibition method was determined by three wood rot fungi, one mouldous fungi, and three tree pathogenic fungi and the antibacterial activity by paper disc method and turbidiometric method by three gram positive bacteria and one gram negative bacteria, Escherichia coli, were also tested. Antifungal activity was the best in the essential oil from C. obtusa, and the following was resulted in order of P. densiflora and P. koraiensis. The essential oil from P. densiflora showed higher antifungal activity against wood rot fungi than that from P. koraiensis while the result was contrary against tree pathogenic fungi. However, the antibacterial activity was the best in the essential oil from P. densiflora, and the following was in order of C. obtusa and P. koraiensis. From these results, the variation of biological activity seemed to be due to the chemical composition of essential oils.
Keywords
Pinus densiflora; P. koraiensis; Chamaecyparis obtusa; C. pisifera; essential oil; antifungal activity; antibacterial activity;
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