Composição química e atividade antifúngica do óleo essencial de Campomanesia xanthocarpa

Abstract

A great challenge for the agriculture sector is the control and prevention on deseases caused by funguses, wich generate risks to alimentary health and economic losses. Among the strategies used to guarantee the microbiologic safety and preservation of foods are the use of synthetics compounds, however some of these compounds can generate waste causing adverse effects not only to the environment, but also to human and animal health. As an alternative to replace these compounds, many researches cite natural extracts as essencial oils. In this context, the objective of this paper was to evaluate the antifungal effect of essencial oil from the leaves of Campomanesia xanthocarpa against the fungus Aspergillus flavus and Colletotrichum gloeosporioides. The attainment was made by hydrodistillation using the Clevenger apparatus. The chemical identification of constituents by gas cromatography coupled to mass espectrum. And, the antifungal determined through the concetration of minimum inhibitory intervention. In the chromatographic analysis were identified 18 compounds, with predominance of sesquiterpenes, being, α-cadinol (18,91 %), Globulol (9,99%), Isocarylphene (9,13%), Caryophellene (8,53%), Spatulene (8,37%) Delta-cadinene (8,04%) considered as majoritarian compounds. The essencial oil presented antifungal activity with: 5000 CIM μg/mL in regarding to A. flavus e C. gloeosporioides.