The essential oil (EO) was extracted from aerial parts with insecticidal and fungicidal activity. Herein, the hydro-distilled essential oils of H. Wolff roots were determined by GC-MS. A total of 37 components were identified, ()-beta-caryophyllene (10.49%), -geranylgeranyl (6.64%), ()-2-decenal (6.17%) and germacrene-D (4.28%). The essential oil of H. Wolff had nematicidal toxicity against with a LC value of 53.45 μg/mL. The subsequent bioassay-guided investigation led to the isolation of three active constituents: falcarinol, ()-2-decenal, and octanoic acid. The falcarinol demonstrated the strongest toxicity against (LC = 8.52 μg/mL). The octanoic acid and ()-2-decenal also exhibited moderate toxicity against (LC = 65.56 and 176.34 μg/mL, respectively). The LC of falcarinol for the toxicity of was 7.7 and 21 times than that of octanoic acid and ()-2-decenal, respectively. Our findings demonstrate that the essential oil from H. Wolff roots and their isolates may be developed as a promising natural nematicide.
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| http://dx.doi.org/10.3390/molecules28052205 | DOI Listing |
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