Chemical Composition, Toxicity, and Repellency of Essential Oils from Three Hedychium Species Against Stored‐Product Insects

Author:

Wang Jia‐Zhu1,Du Yue‐Shen1,Qi Yuan‐Tong1,Zhang Chen2,Zhang Zhao‐Rui2,Zhang Hai‐Ming3,Du Shu‐Shan1ORCID

Affiliation:

1. Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization Faculty of Geographical Science Beijing Normal University, Haidian District Beijing 100875 China

2. Department of Biomedical Science Beijing City University No. 269 North 4th Ring Middle Road, Haidian District Beijing 100191 China

3. Experimental Research Center China Academy of Chinese Medical Sciences Beijing 100700 China

Abstract

AbstractStored products are constantly infested by insects, so finding eco‐friendly bioinsecticides for insect management is important. The work aimed to assess the insecticidal and repellent activity of essential oil (EO) from Hedychium glabrum S. Q. Tong, Hedychium coronarium Koen., and Hedychium yunnanense Gagnep. against Tribolium castaneum, Lasioderma serricorne, and Liposcelis bostrychophila. Results showed that 88 chemical components were identified in the extracted Hedychium EOs, indicating that they exhibited diversity in components. According to principal component analysis (PCA), the composition of the EO from the H. yunnanense stem and leaf (EOHYSL) was significantly different from other EOs due to the different organs and species. The biological activity also varied continuously with plant species and organs. Only the EO of H. yunnanense (EOHY) showed strong fumigant toxicity. While in the contact tests, EOHGR showed the strongest toxicity effect on L. bostrychophila, with a LC50 value of 71.76 μg/cm2, which was closest to the positive control (Pyrethrin). All EOs had remarkable repellent activities against the three target insects, and repellency increased with concentration. According to the results of the comprehensive score, EOHY had the highest potential, which ranged from 0.7999 to 0.8689. Thus, Hedychium EOs possess potential biorational traits to be biological insecticides.

Publisher

Wiley

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