Análise dos constituintes voláteis de espécies da família lauraceae

Abstract

Predominantly arboreal in habit, the Lauraceae family consists of about 32 genera and 25,000 species. It is distributed in the tropical and subtropical regions, with centers of distribution in southeast Asia and Brazil. The species belonging to the genera Aniba, Nectandra, Ocotea, Licaria and Dicypellium have been the most studied in terms of essential oil production. In this work we analyzed the volatile chemical composition of the essential oils from the following Lauraceae species: Aniba duckei, A. fragrans, A. riparia, A. rosaeodora, Endlicheria macrophylla, Licaria guianensis, Ocotea fasciculata and o. longifolia. The essential oils were obtained by hydrodistillation for 3 hours from the dried material at room temperature for a period of 7 days. The oils obtained were analyzed by Gas Chromatography coupled to Mass Spectrometry (CGIEM) using a silica capillary column, type DB-5 and temperature program 60°-240°C (3°C/min). The main component identified in Aniba duckei, A. fragrans and A. rosaeodora oil was linalool (81.8%, 67.0% and 97.8%, respectively). In A. riparia oil, the main constituents identified were trans-caryophyllene (16.9%) and a-humulene (14.9%). Endlicheria macrophylla oil is rich in caryophyllene oxide (46.5%). Spatulenol (15.0%) and limonene (14.4%) were the main components identified in Licaria guianensis oil. The main components of the oils from Ocotea fasciculata were b-elemene (18.8%), elemol (24.0%) and a-cadinol (17.1%) and from o. longifolia were caryophyllene oxide (19.8%) and l-epi-eudesmol (25.3%). The information obtained will serve as a reference for future research on the Lauraceae family, composing the inventory of the odoriferous flora of the Amazon.