Extraction of wood compounds by use of subcritical fluids | Zendy

José González-Rodrı́guez | Zendy; P. M. Pérez-Juan | Zendy; M. D. Luque de Castro | Zendy

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Extraction of wood compounds by use of subcritical fluids

Author(s) -

José González-Rodrı́guez,

P. M. Pérez-Juan,

M. D. Luque de Castro

Publication year - 2003

Publication title -

chromatographia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.427

H-Index - 67

eISSN - 1612-1112

pISSN - 0009-5893

DOI - 10.1007/bf02492409

Subject(s) - chemistry , extraction (chemistry) , chromatography , flame ionization detector , gas chromatography , ethanol , mass spectrometry , hot water extraction , organic chemistry

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

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