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Molecules 2009, 14(7), 2573-2581; doi:10.3390/molecules14072573
Article

Extraction of Oil from Wheat Germ by Supercritical CO2

1
, 2
, 1
, 1
, 2
 and 1,*
1 Dipartimento di Scienze Chimiche, Università degli Studi di Cagliari, Cittadella Universitaria di Monserrato, SS 554, km 4.500 09042 Cagliari, Italy 2 Dipartimento di Biologia Sperimentale, Sezione di Patologia Sperimentale, Università degli Studi di Cagliari, Cittadella Universitaria di Monserrato, SS 554, km 4.500 09042 Cagliari, Italy
* Author to whom correspondence should be addressed.
Received: 26 May 2009 / Revised: 30 June 2009 / Accepted: 13 July 2009 / Published: 15 July 2009
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Abstract

This study examined the supercritical fluid extraction of wheat germ oil. The effects of pressure (200-300 bar at 40 °C) and extraction time on the oil quality/quantity were studied. A comparison was also made between the relative qualities of material obtained by SFE and by organic solvent extraction. The extracts were analyzed for α-tocopherol and polyunsaturated fatty acid content. The maximum wheat germ oil yield at about 9% was obtained with supercritical carbon dioxide extraction at 300 bar, while fatty acid and α-tocopherol composition of the extracts was not remarkable affected by either pressure or the extraction method.
Keywords: wheat germ oil; vitamin E; fatty acid; supercritical extraction; carbon dioxide wheat germ oil; vitamin E; fatty acid; supercritical extraction; carbon dioxide
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Piras, A.; Rosa, A.; Falconieri, D.; Porcedda, S.; Dessì, M.A.; Marongiu, B. Extraction of Oil from Wheat Germ by Supercritical CO2. Molecules 2009, 14, 2573-2581.

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