Use of superheated liquids for the extraction of non-volatile compounds from wood: HPLC studies

Gonzalez-Rodriguez, Jose and Luque de Castro, Maria Dolores and Perez Juan, Pedro (2004) Use of superheated liquids for the extraction of non-volatile compounds from wood: HPLC studies. Journal of Chromatography A, 1038 (1-2). pp. 3-9. ISSN UNSPECIFIED

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Use of superheated liquids for the extraction of non-volatile compounds from wood: HPLC studies
A study of the extraction of oak wood compounds using superheated water-ethanol mixtures ranging from 10 to 60% ethanol is reported. Identification and characterization of the extracted compounds have been made by high performance liquid chromatography. The extraction has been performed using the static mode by single or repetitive cycles. The variables affecting the extraction process have been studied and their optimum values established (extraction time: 50 min; pressure: 40 atm; extraction temperature: 180º C). The study allows to compare the non-volatile polyphenol fractions obtained in this way with those present in commercial samples with fully agreement between them. In addition, the method allows manipulation of the extract composition by changing the working pressure, temperature and water-ethanol ratio.
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Official URL: http://dx.doi.org/10.1016/j.chroma.2004.03.015

Abstract

A study of the extraction of oak wood compounds using superheated water-ethanol mixtures ranging from 10 to 60% ethanol is reported. Identification and characterization of the extracted compounds have been made by high performance liquid chromatography. The extraction has been performed using the static mode by single or repetitive cycles. The variables affecting the extraction process have been studied and their optimum values established (extraction time: 50 min; pressure: 40 atm; extraction temperature: 180º C). The study allows to compare the non-volatile polyphenol fractions obtained in this way with those present in commercial samples with fully agreement between them. In addition, the method allows manipulation of the extract composition by changing the working pressure, temperature and water-ethanol ratio.

Item Type:Article
Keywords:solid liquid extraction, HPLC, Diode array Detector, wood, superheated liquids, pressurised liquid extraction, accelerated liquid extraction, method optimisation, experimental design, gallic acid, polyphenols, catechins, cinnamic aldehydes, vanillic acid, vanillin
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 Science > School of Life Sciences
ID Code:2121
Deposited By: Jose Gonzalez-Rodriguez
Deposited On:06 Jan 2010 15:18
Last Modified:05 Jun 2013 15:05

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