Repellency, fumigant and contact toxicities of essential oils of selected species from family Myrtaceae against Tribolium castaneum

Dynamic Chiropractic

Zahida perveen¹  Saima Siddique² 

[1] Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore-54600, Pakistan.;Centre of Earth and Environmental Sciences, Punjab University, Lahore, Pakistan.

关键词: Aldehydes;    bio-assay;    environment;    hydro-distillation;    GC-MS;    LC50;    mammals;    mortality;    M. communis;    M. genistifolia.;   

DOI  :  

学科分类：医学（综合）

来源: MPA Media

【 摘 要 】

The uncontrolled use of synthetic chemicals is a great hazard for the environment and consumers. Essential oils were introduced as less toxic agents against mammals and non-targeted insects. In the present study, essential oils from five plant species belonging to family Myrtaceae were extracted using hydro-distillation and their chemical composition was determined by gas chromatography mass spectroscopy. The essential oils were found to be mixtures of hydrocarbons, alcohols, aldehydes and esters. The oils were also assayed for their insecticidal properties against 25 days adult ofTribolium castaneum(red flour beetle). The results showed that the selected essential oils ofEugenia jambolana, Myrtus communis, Melaleucaalternifolia, Melaleuca genistifolia, Sygygium caryophyllatumandCallistemon citrinushad repellency, fumigant and contact toxicities againstT. castaneum.The repellency was observed after 24 h. All oils showed repellency at all the applied concentrations. The 100% repellency was shown byM. communisat concentration of 0.000013ml/ml while S. caryophyllatum, M. alternifoliaandC. citrinus showed 100% repellency at 0.0003ml/ml. In fumigation and contact toxicity bio-assay, the percentage mortality increased with increasing concentration.C. citrinus gave 100% mortality at 0.68ml/ml air at exposure period of 4 h whileM. alternifolia,M. communisandE. jambolanashowed 100% mortalities at 0.909ml/ml air at an exposure period of 4 h.T. castaneumwas found highly susceptible toS. caryophyllatumwith LC50value of 0.034ml/cm2when exposed to oil for 1 day. While forM. alternifolia,M. communisandM. genistifoliathe LC50values were 0.042, 0.060 and 0.533ml/cm2respectively at exposure period of 1 day. These investigations showed that the selected essential oils can be used as alternative grain-protectants for stored-products insects.

【 授权许可】

Unknown