earticle

영어

The present study was undertaken to assess the antilisterial potential of the essential oil and extracts of Metasequoia glyptostroboides Miki ex Hu leaf against a panel of Listeria monocytogenesspp. The chemical composition of the oil was analyzed by GC-MS. Forty nine compounds representing 94.62% of the total oil were identified, of which 2-butaneone (30.60%), cyclopentane (15.10%), β-myrcene (13.29%), cyclobutane (7.67%), furan (3.00%), valeramide (2.81%), borneol (1.20%), β-farnesene (1.67%), thymol (1.44%), α-pinene (1.46%), 2-hydroxypropanoic acid (1.00%) and 3-cyclohexen-1-ol (1.00%) were found to be the major compounds of the leaf essential oil. The oil (5, 10, 15 μl/disc) and organic extracts of chloroform, ethyl acetate and methanol (10 μl, corresponding to 400 μg/disc) revealed remarkable antilisterial effect against Listeria monocytogenes ATCC 19111, 19116, 19118, 19166 and 15313 as a diameter of inhibition zones which were found in the range of 9.7~14.1, 11.2~17.3, 13.5~20.3, 10.2~14.0, 12.3~16.2 and 10.2~13.2 mm, respectively. Also the oil had strong detrimental effect on the viable count of the tested Listeria spp. The findings of this study support the potential role of M. glyptostroboidesas a natural antilisterial agent which might be used in food industries as a natural preservative.