Repellent constituents of essential oil of Cymbopogon distans aerial parts against two stored-product insects

The screening for bioactive principles from several Chinese medicinal herbs showed that the essential oil of Cymbopogon distans aerial parts possessed strong repellency against the booklouse, Liposcelis bostrychophila , and the red flour beetle, Tribolium castaneum . A total of 36 components of the...

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Published in:Journal of agricultural and food chemistry Vol. 59; no. 18; p. 9910
Main Authors: Zhang, Jing Song, Zhao, Na Na, Liu, Qi Zhi, Liu, Zhi Long, Du, Shu Shan, Zhou, Ligang, Deng, Zhi Wei
Format: Journal Article
Language:English
Published: United States 28.09.2011
Subjects:
Animals
Cymbopogon - chemistry
Insect Repellents - analysis
Insect Repellents - chemistry
Insect Repellents - isolation & purification
Insecta
Monoterpenes - analysis
Monoterpenes - isolation & purification
Oils, Volatile - chemistry
Tribolium
ISSN:1520-5118, 1520-5118
Online Access:Get more information
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Summary:The screening for bioactive principles from several Chinese medicinal herbs showed that the essential oil of Cymbopogon distans aerial parts possessed strong repellency against the booklouse, Liposcelis bostrychophila , and the red flour beetle, Tribolium castaneum . A total of 36 components of the essential oil were identified by GC and GC-MS. trans-Geraniol (16.54%), (R)-citronellal (15.44%), (+)-citronellol (11.51%), and α-elemol (9.06%) were the main components of the essential oil followed by β-eudesmol (5.71%) and (+)-limonene (5.05%). From the essential oil, four monoterpenes were isolated by bioassay-guided fractionation. The compounds were identified as limonene, citronellol, citronellal, and trans-geraniol. Geraniol and citronellol were strongly repellent against the booklouse, L. bostrychophila, whereas citronellal and limonene exhibited weak repellency against the booklouse. Geraniol and citronellol exhibited comparable repellency against the booklouse relative to the positive control, DEET. Moreover, geraniol and citronellol exhibited stronger repellency against the red flour beetle than DEET, whereas the two other compounds showed the same level of repellency against the red flour beetle compared with DEET.
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ISSN:1520-5118
1520-5118
DOI:10.1021/jf202266n