VOLATILE PROFILE OF ARAÇÁ ESSENTIAL OIL OBTAINED BY CO2 SUPERCRITICAL EXTRACTION
Brazil have a large variety of flora with different vegetable species poorly known and studied that can attract interest of consumers and industries in food and pharmacological areas. Between this species there are araçá (Psidium catlleianum) that was aim of this work. The raw material used in this research was harvested in Pirassununga city, state of São Paulo, Brazil. The supercritical fluid extraction is considered a clean technology cause it doesn’t use organic solvents. This technology also presents several advantages under traditional extraction methods this advantages are: use of low temperature, lower energy expenditure, high control of extraction parameters that results in high selectivity besides obtainment of high quality products and solvent free. The aim of this work was characterize volatile compounds of araçá present in essential oil of this fruit extracted by SFE (50 ºC, 250 bar, 20 min of static time and 6 h of extraction with 5 g/min of CO2 flow). Using a gas chromatography coupled with mass spectrometry with automatic injector and RtxR-5MS capillary column. The injector temperature was 220 ºC and the interface between column and ion source was 250 ºC with ionization energy in the source of 70 eV and mass scan ranged from 50 to 500 m/z. The oven temperature followed a linear ramp of 1 ºC/min between 60 ºC e 80 ºC and 3 ºC/min until 200 ºC. The mainly 14 chromatographic peaks was identified and the majority volatile compounds identified was E-caryophyllene (15,96%), cis-α-bisabolene (15,12%), β-sesquiphellandrene (13,50%) e β-bisabolene (12,54%) that there are constituents of several essential oils. Emphasizing that E-caryophyllene already have been demonstrating that have antinoceptive, anti-inflammatory, neuroprotective, anti-anxiolytic and antidepressant effects in vivo and in vitro assays.