期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 52, 期 9, 页码 2549-2551出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf035386m
关键词
metabolism; Spodoptera litura; Trichoplusia ni; thymol; trans-anethole; synergistic effects
Metabolism of the monoterpenoid thymol and the phenylpropanoid trans-anethole, both constituents of essential oils, was investigated following topical and oral administration of the compounds to the tobacco cutworm (Spodoptera litura) and the cabbage looper (Trichoplusia ni). In both species and irrespective of route, administration of thymol resulted in the excretion of its 3-O-beta-glucoside, whereas trans-anethole was hydroxylated on the side chain methyl group. Both metabolites were isolated and their structures elucidated by interpretation of their mass and NMR spectra. Previous experiments indicated that trans-anethole synergized the toxicity of thymol in S. litura, but analyses of feces indicated that metabolism of thymol was not significantly suppressed when the two compounds were orally coadministered to T. ni larvae.
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