Investigation of single and joint fumigant insecticidal action of citruspeel oil components

Abstract

Following gas chromatographic analysis of citruspeel oils, 30 components of these oils were tested against Callosobruchus rnaculatus (F.). Several compounds (22), including the major component of all citruspeel oils--( +)-limonene-were found to be bioactive, having a strong vapour insecticidal activity. These components and some of their isomers were shown to have varying levels of activity (a-terpineol, 24-h LC,, 4.05 pl litre-' to n-tridecane, LC,, 13.3 p1 litre-I), but no single component could account for the activity measured for a typical citruspeel oil (lime) on a proportional basis. Joint action studies established that in artificial mixtures several pure components of citruspeel oil potentiated their individual fumigant action in a manner consistent with an additive model against C. maculatus.

Allelopathic and insecticidal activities of essential oil of Dracocephalum kotschyi Boiss. from Iran: A new chemotype with highest limonene-10-al and limonene

“…Inhibitory effect of monoterpenoids (i.e., limonene, linalool, polegon, camphor, etc.) has been reported previously on acetylcholinesterase enzyme activity (Don Pedro, 1996;López and Pascual-Villalobos, 2010;Orhan et al, 2008). Moreover, some monoterpenes have a critical rule in inhibition of cytochrome P450-dependent monooxygenases (Choi et al, 2006;Ketoh et al, 2002;Lee et al, 2001).…”

Acute, Sublethal, Antifeedant, and Synergistic Effects of Monoterpenoid Essential Oil Compounds on the Tobacco Cutworm, Spodoptera litura (Lep., Noctuidae)

“…It is frequently noted that the "original" complex essential oils are considerably more efficacious than the pure compounds derived from them. Examples include oil of anise (from which trans-anethole is derived), rosemary oil, and various citrus oils (8,10,17). Identifying such synergist compounds within complex mixtures may allow for the development of more effective control agents as well as the use of smaller absolute amounts in the mixture to achieve satisfactory levels of efficacy.…”

The Effects of Extracts Obtained by Supercritical Fluid Extraction and Traditional Extraction Techniques on LarvaeLeptinotarsa decemlineataSAY.

“…Several studies were published on the fumigation or contact toxicity of pure monoterpenoid constituents against various insect species (20)(21)(22)(23). However, no report was found in the literature on the topical toxicity of monoterpenes and oils against Colorado potato beetle.…”