Supercritical carbon dioxide extraction of lipids from Eucalyptus globuluswood

Various typical lipid components of wood extractives have been isolated fro m Eucalyptus globulus wood by supercritical carbon dioxide modified with me thanol. The influence of various extraction parameters on the yield and qua litative composition of the extracts have been studied. The extracts were a nalyzed by gas chromatography-mass spectrometry and compared with those obt ained by Soxhlet extraction with acetone, the standard method for the deter mination of wood extractives. The qualitative and quantitative results obta ined by both methods were in good agreement. The experimental planning to a sses the influence of pressure, temperature and percentage of methanol and their interactions on the extraction efficiency was carried out with a fact orial design, followed by multiple linear regression algorithm. (C) 2000 El sevier Science B.V. All rights reserved.