Document Detail

Toxicity of cassia and cinnamon oil compounds and cinnamaldehyde-related compounds to Sitophilus oryzae (Coleoptera: Curculionidae).
MedLine Citation:
PMID:  19133480     Owner:  NLM     Status:  MEDLINE    
The toxicity to adult Sitophilus oryzae (L.) (Coleoptera: Curculionidae) of two cassia oils (Especial and true), four cinnamon oils (technical, #500, bark, and green leaf), and (E)-cinnamaldehyde and its 41 structurally related compounds was examined by residual and vapor-phase toxicity bioassays. Results were compared with those of dichlorvos. In residual bioassays, cassia and cinnamon oils exhibited good insecticidal activity. Based on 48-h LD50 values, the toxicity of allyl cinnmate (0.0003 mg/cm2) was comparable with that of dichlorvos (0.00025 mg/cm2). Potent insecticidal activity also was observed with benzaldehyde, beta-caryophyllene, cinnamonitrile, hydrocinnamyl acetate, (E)-4-hydroxycinnamic acid, and alpha-terpineol (LD50 = 0.003-0.009 mg/cm2). Structure-activity relationships indicate that types of functional groups rather than hydrophobicity or vapor pressure parameters seem to play a role in determining the toxicities to adult S. oryzae. In vapor-phase toxicity tests with weevils, these compounds were more effective in closed containers than in open ones. These results indicate that the effect of the compounds was largely a result of action in the vapor phase. Cassia and cinnamon oils and test compounds described merit further study as potential fumigants for the control of S. oryzae because of their greater activity as a fumigant.
Eun-Jeong Lee; Jun-Ran Kim; Dong-Ro Choi; Young-Joon Ahn
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of economic entomology     Volume:  101     ISSN:  0022-0493     ISO Abbreviation:  J. Econ. Entomol.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2009-01-12     Completed Date:  2009-02-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985127R     Medline TA:  J Econ Entomol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1960-6     Citation Subset:  IM    
School of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea.
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MeSH Terms
Acrolein / analogs & derivatives*,  chemistry
Cinnamomum / chemistry*
Cinnamomum zeylanicum / chemistry
Insecticides* / chemistry
Lethal Dose 50
Pesticide Residues
Plant Oils* / chemistry
Structure-Activity Relationship
Reg. No./Substance:
0/Insecticides; 0/Pesticide Residues; 0/Plant Oils; 104-55-2/cinnamic aldehyde; 107-02-8/Acrolein

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