CONTROLLED RELEASE PROFILE OF ESSENTIAL OIL FORMULATIONS USING GAS CH ROM ATOGRAPHY

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Date

2008-09-13

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Department Chemistry,Faculty of Natural and Applied Sciences, nasarawa state university keffi.

Abstract

Controlled release dust formulations of four essential oils from four different plant species were prepared using different diluent; alumina, bentonite and kaolin with Tween 20 as additive. The releasing profde of the essential oils was assessed using Gas Chromatography by comparing the peak height of the essential oil residue from formulations to that of standard essential oil. The results showed that irrespective of the oil, alumina promoted the reduction of releasing rate of essential oils from formulations than bentonite and bentonite than kaolin formulations. Also the additive, (Tween 20) has a pronounced effect on the releasing profde. There was higher concentration of essential oil on spent formulations of all the formulations that has additive compared to its corresponding formulations without additive.

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Keywords

Formulations, essential oil, diluent, Gas Chromatography, additive

Citation

Olonisakin, A., Oladimeji, M. O., Lajide, L; Ajayi, F. O. 2007. Evaluation of dust formulations of essential oils for insecticidal property. Production, Agriculture and Technology, 2(3): 137-146. Philips, F. T. 1974. Some aspect of volatilization of organochlorine insecticides. Chem. Ind. 2: 193-197. Pillmoor, J. B., Wright, K; Terry, A. S. 1993. Natural products as a source of agrochemicals and leads for chemical gynthesis. Pesticide Science 39: 131-140. Polon, J. A. 1973. Formulation of pesticide dust, wettable powders and granules. In: Wvan Valkenburg, (ed.) Pesticide Formulation. Pub. Marcel Dekkar Inc. NYpp. 144-219. Polon, J. A; Sawyer, E. E. 1962. The use of stabilizing agent to decrease decomposition of marathon on high sorptive carrier. J. Agr. Fd. Chem. 10: 244-248. Sawyer, E. W; Polon, J. A. 1961. Toxicant carrier and pesticidal decomposition containing same. US Patents 967-972. t k Watkins, T. C; Norton, L. B. 1947. A classification of insecticide dust diluents and carriers. J. Econet. 40:211-214.

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https://keffi.nsuk.edu.ng/handle/20.500.14448/5474

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