Gonzalez-Rodriguez, Jose and Perez Juan , Pedro and Luque de Castro, Maria Dolores (2003) Extraction of wood compounds by use of subcritical fluids. Chromatographia, 57 (5-6). pp. 363-368. ISSN 0009-5893

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Abstract

A study of the extraction of oak wood compounds with subcritical water-ethanol mixtures as extractant, with an ethanol content between 0-60%, is reported. Identification and characterisation of the extracted compounds have been made by spectrophotometry and gas chromatography with either flame ionisation or mass detectors. Extraction was performed statically manner by use of a single cycle or repeated cycles. All variables affecting the extraction process were studied and optimised. Extraction time and temperature are 60 min and 200ºC, respectively. Comparison of the extract thus obtained with commercial extracts showed the former to be rich in compounds characteristic of the commercial extracts. The method enables manipulation of the extract composition by changing the temperature and water/ethanol ratio used. It is faster than the traditional procedures for obtaining wood extracts.

Item Type:	Article
Additional Information:	A study of the extraction of oak wood compounds with subcritical water-ethanol mixtures as extractant, with an ethanol content between 0-60%, is reported. Identification and characterisation of the extracted compounds have been made by spectrophotometry and gas chromatography with either flame ionisation or mass detectors. Extraction was performed statically manner by use of a single cycle or repeated cycles. All variables affecting the extraction process were studied and optimised. Extraction time and temperature are 60 min and 200ºC, respectively. Comparison of the extract thus obtained with commercial extracts showed the former to be rich in compounds characteristic of the commercial extracts. The method enables manipulation of the extract composition by changing the temperature and water/ethanol ratio used. It is faster than the traditional procedures for obtaining wood extracts.
Keywords:	GC-MS, solid liquid extraction, subcritical fluids, pressurised liquid extraction, accelerated solvent extraction, superheated liquid extraction, analytical chemistry, wood, wine, wine industry, experimental design, chemometry
Subjects:	F Physical Sciences > F110 Applied Chemistry F Physical Sciences > F111 Industrial Chemistry F Physical Sciences > F190 Chemistry not elsewhere classified F Physical Sciences > F100 Chemistry F Physical Sciences > F180 Analytical Chemistry
Divisions:	College of Sciences > Faculty of Science > School of Life Sciences
Depositing User:	Jose Gonzalez-Rodriguez
Date Deposited:	08 Jan 2010 10:02
Last Modified:	13 Mar 2013 08:34
URI:	http://eprints.lincoln.ac.uk/id/eprint/2117

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