Xin-Xin Lu1, Na-Na Hu1, Yue-Shen Du1, Borjigidai Almaz2, Xu Zhang3, Shu-Shan Du4. 1. Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Haidian District, Beijing, 100875, China. 2. Key Laboratory of Ethnomedicine, Ministry of Education, Minzu University of China, No. 27, Zhongguancun South Street, Haidian District, Beijing, 100081, P.R. China. 3. High Educational Key Laboratory of Natural Medicinal Pharmacology and Druggability of Guizhou Province, School of Pharmacy, Guizhou Medical University, Guiyang, 550025, Guizhou, China. 593393893@qq.com. 4. Beijing Key Laboratory of Traditional Chinese Medicine Protection and Utilization, Faculty of Geographical Science, Beijing Normal University, Haidian District, Beijing, 100875, China. dushushan@bnu.edu.cn.
Abstract
BACKGROUND: Several species of Verbenaceae have been widely used in medicine, and some species of Verbenaceae have been observed good insecticidal activity, such as Lantana camara and Vitex negundo. There is no report about repellent activity of Clerodendrum bungei Steud. (C. bungei) against stored product insects. The chemical composition of C. bungei essential oil (EO) were identified, repellent activity of methanol extract, EO of C. bungei and two main components of EO against T. castaneum, L. serricorne and L. bostrychophila were evaluated for the first time. RESULTS: EO of C. bungei was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS) and GC. A total of 25 components of the C. bungei EO were identified. The principal compounds in the EO were myristicin (75.0%), 2,2,7,7-Tetramethyltricyclo[6.2.1.0(1,6)]undec-4-en-3-one (4.1%) and linalool (3.4%). Results of bioassays indicated that C. bungei EO exerted strong repellent activity against three target insects. As main constituents, myristicin and linalool also had certain repellency. CONCLUSION: This work suggests that the EO of C. bungei has promising potential to develop into botanical repellents for the control of pest damage in warehouses and grain stores.
BACKGROUND: Several species of Verbenaceae have been widely used in medicine, and some species of Verbenaceae have been observed good insecticidal activity, such as Lantana camara and Vitex negundo. There is no report about repellent activity of Clerodendrum bungei Steud. (C. bungei) against stored product insects. The chemical composition of C. bungei essential oil (EO) were identified, repellent activity of methanol extract, EO of C. bungei and two main components of EO against T. castaneum, L. serricorne and L. bostrychophila were evaluated for the first time. RESULTS: EO of C. bungei was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS) and GC. A total of 25 components of the C. bungei EO were identified. The principal compounds in the EO were myristicin (75.0%), 2,2,7,7-Tetramethyltricyclo[6.2.1.0(1,6)]undec-4-en-3-one (4.1%) and linalool (3.4%). Results of bioassays indicated that C. bungei EO exerted strong repellent activity against three target insects. As main constituents, myristicin and linalool also had certain repellency. CONCLUSION: This work suggests that the EO of C. bungei has promising potential to develop into botanical repellents for the control of pest damage in warehouses and grain stores.
Authors: Jing Song Zhang; Na Na Zhao; Qi Zhi Liu; Zhi Long Liu; Shu Shan Du; Ligang Zhou; Zhi Wei Deng Journal: J Agric Food Chem Date: 2011-08-29 Impact factor: 5.279