Repellence of the main components from the essential oil of <i>Glycosmis lucida</i> Wall. ex Huang against two stored product insects

<p>A screening of Chinese medicinal herbs and wild plants for agrochemicals was carried out; the essential oil of <i>Glycosmis lucida</i> leaves was found to possess significant repellent activity against <i>Tribolium castaneum</i> and <i>Liposcelis bostrychophila</i>. It was found that the main components included elixene (19.81%), spathulenol (10.68%), anethole (12.05%), verbenone (10.32%) followed by <i>β</i>-caryophyllene (6.87%). The essential oil, anethole and verbenone were strongly repellent against <i>T. castaneum</i> (96, 86 and 94%, respectively, at 15.73 nL cm<sup>−2</sup>) and <i>L. bostrychophila</i> (100, 68 and 72%, respectively, at 31.58 nL cm<sup>−2</sup>) after a 2h treatment. The results indicate that anethole and verbenone had the potential to be developed as natural repellents for control of stored product insects.</p>