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Contact Toxicity and Repellency of the Essential Oil of Dictamnus dasycarpus Roots from China against Two Stored‐Product Insects
Author(s) -
Yang Kai,
Guo ShanShan,
Geng ZhuFeng,
Du ShuShan,
Wang ChengFang,
Deng ZhiWei
Publication year - 2015
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201400262
Subject(s) - lasioderma serricorne , essential oil , chemistry , toxicology , traditional medicine , toxicity , acute toxicity , botany , biology , food science , medicine , organic chemistry , larva
During our screening program for new agrochemicals from traditional medicinal herbs, Dictamnus dasycarpus was found to possess contact toxicity and repellent activity against the cigarette beetle Lasioderma serricorne and the booklouse Liposcelis bostrychophila. The essential oil obtained by hydrodistillation of D. dasycarpus roots was characterized by GC‐FID and GC/MS analyses, and the main components identified were syn ‐7‐hydroxy‐7‐anisylnorbornene ( 1 , 49.9%), 1,3,4,5,6,7‐hexahydro‐2 H ‐inden‐2‐one ( 2 , 11.6%), 5,6‐diethenyl‐1‐methylcyclohexene ( 3 , 7.4%), and 3,9‐dimethyltricyclo[4.2.1.1 2,5 ]dec‐3‐en‐9‐ol ( 4 , 6.35%). The D. dasycarpus root oil exhibited strong contact toxicity against L. serricorne adults and L. bostrychophila , with LD 50 values of 12.4 μg/adult and 27.2 μg/cm 2 , respectively. Moreover, the essential oil also showed strong repellency against both stored‐product insects tested.