Chemical composition, insecticida! and antifungal activity of Ocimum micranthum Willd
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Abstract
A fundamental process of all living cells is the detection and selective uptake of chemical molecules which give origin to chemical communication at many biological levels. This knowledge offers the possibility to develop effective methods for pest control whit no contamination effects. Aromatic plants have traditionally been used in the treatment of illnesses and the control of insects. Their essential oils leave been known for their therapeutic, insecticidal, and antifungal activity. Some of the most popular oils are extracted from some species of the Ocimum genus. In this study, the composition and the chemical profile of the essential oil from Ocimum micranthum Willd (cinnamon basil) were investigated. lts fungicide and pesticide potentials were also evaluated with the purpose of contributing to the knowledge and use of a natural product. The essential oil obtained by hydrodistillation of wild plants. ali gathered in lbagué-Tolima, was analyzed by gas chromatography-mass spectrometry (GC-MS). The chemical profile found was phenylpropane > monoterpene > sesquiterpene, being the methyl cinnamate (79.8%) and methyl chavicol (12.3%) the most abundant compounds. The insecticide potential was assayed in Musca domestica L. (two day ali adults), using the toxicity by contact method, and the antifungal activity was tested on Fusarium oxisporum Schi. by incorporating the essential oíl in the culture medium. The essential oil showed insecticida! and antifungal activity.
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