Identification of Repellent and Insecticidal Constituents fromArtemisia mongolicaEssential Oil againstLasioderma serricorne

Chunxue You,Shanshan Guo,Shushan Du,Kai Yang,Wenjuan Zhang,Zhiwei Deng,Chengfang Wang,Zhufeng Geng

doi:10.1155/2015/549057

Chunxue You, Shanshan Guo + Show 6 more

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https://doi.org/10.1155/2015/549057

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Abstract

The aims of this research were to determine the chemical composition and insecticidal and repellent activities of theArtemisia mongolicaessential oil againstLasioderma serricorneand to isolate active constituents from the essential oil. The essential oil ofA. mongolicawas obtained by hydrodistillation and 36 components were identified with GC-MS. Eucalyptol (39.88%), (S)-cis-verbenol (14.93%), 4-terpineol (7.20%), (−)-camphor (6.02%), andα-terpineol (4.20%) were found to be major components. With a further isolation process, five constituents obtained from the essential oil were identified as eucalyptol, verbenol, 4-terpineol, camphor, andα-terpineol. In the progress of assay, it showed thatL. serricorneadults had different sensitivities to the crude essential oil and isolated constituents. 4-Terpineol exhibited strongest contact activity againstL. serricorne, showing the LD50value of 8.62 μg/adult. Moreover, camphor andα-terpineol showed stronger fumigant activity (LC50=2.91and 3.27 mg/L air, resp.) againstL. serricornethan crude essential oil and other constituents. In addition, the essential oil, eucalyptol, verbenol, andα-terpineol showed comparable repellency againstL. serricorneadults. The results indicate that the essential oil and isolated compounds have potential to provide more efficient and safer natural insecticides or repellents for control of insects in food and Chinese medicinal materials preservation.

Highlights

Antagonistic storage has been used as a kind of traditional Chinese medicine conservation methods
The A. mongolica essential oil was green with a yield of 0.12% (v/w) and density of 0.91 g/mL
The chemical composition of the essential oil of A. mongolica aerial parts in the present study was not same as that reported in previous study

Summary

Introduction

Antagonistic storage has been used as a kind of traditional Chinese medicine conservation methods. It mainly utilizes some traditional Chinese medicinal materials having special odor to store with medicinal materials vulnerable to insects to deter the insects. In order to inherit and develop the traditional method of prevention and control of stored insects, we took Artemisia mongolica as research object and Lasioderma serricorne adults as the target insects. The cigarette beetle occurs frequently in tropical and subtropical areas. They cause significant damage during storage of perishable food products such as cereals, legumes, tobacco, and traditional Chinese medicinal materials in warehouses [1, 2]. Recommended pest control measures in durable stored products are mainly the use of synthetic insecticides or fumigants

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