Evaluation of the efficiency of volatile organic compounds extraction from eucalyptus viminalis (Eucalypti viminalis Labill) using subcritical extractants

Bioactive compounds were extracted from Eucalyptus viminalis with subcritical water in the temperature range of 120–200°C under a pressure of 5 MPa, as well as with aqueous solutions of ethanol with different concentrations at 200°C and 5 MPa. The resulted extracts were analyzed by gas chromatographymass spectrometry. The detected volatile organic compounds were identified. The contents of α-pinene, β-pinene, α-phellandrene, p-cymene, and 1,8-cineole in the extracts obtained were determined.