Toxic and repellent effects of the essential oil from Fr. Schmidt var. mandshuricum (Maxim.) Kitag. were evaluated against and . The essential oils (EOs) from roots (ER) and leaves (EL) of were obtained separately by hydrodistillation and characterized by gas chromatography-mass spectrometry (GC-MS) analysis. Major components of ER and EL included methyleugenol, safrole, and 3,5-dimethoxytoluene. Both ER and EL of showed certain toxicity and repellency against and . 3,5-Dimethoxytoluene, methyleugenol, and safrole were strongly toxic via fumigation to (LC = 4.99, 10.82, and 18.93 mg/L air, respectively). Safrole and 3,5-dimethoxytoluene possessed significant fumigant toxicity against (LC = 0.83 and 0.91 mg/L air, respectively). The three compounds all exhibited potent contact toxicity against the two insect species. Here, the EL of was confirmed to have certain toxicity and repellency against stored product insects, providing a novel idea for the comprehensive use of plant resources.
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| http://dx.doi.org/10.3390/molecules23092131 | DOI Listing |
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