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Improving the extraction of α-tocopherol-enriched oil from grape seeds by supercritical CO<sub>2</sub>. Optimisation of the extraction conditions

TitleImproving the extraction of α-tocopherol-enriched oil from grape seeds by supercritical CO2. Optimisation of the extraction conditions
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2007
AuthorsBravi, M., Spinoglio F., Verdone N., Adami Michele, Aliboni A., D’Andrea Armando, De Santis A., and Ferri D.
JournalJournal of Food Engineering
Volume78
Pagination488 - 493
Date Published2007///
KeywordsCarbon dioxide, Grape seed, Supercritical fluid extraction (SFE), α-tocopherol
Abstract

In this work milled grape seeds from Vitis Vinifera were leached with supercritical carbon dioxide (SC-CO2) to assess the opportunity to obtain and α-tocopherol-enriched oil, having many potential uses in both the pharmaceutical and food industry. The extractions were carried out at the pressure of 25 MPa without pre-soaking to better reflect the prospective operation mode in a forthcoming industrial use. The obtained results were evaluated in terms of total amount of oil and total amount of α-tocopherol extracted from milled grape seeds as a function of particle size, extraction temperature and CO2 to seed mass ratio. The optimal extraction conditions were found to be 80 °C and ground seed fragment size in the range 300-425 μm; under these conditions the extracted oil contains as much as 265 ppm α-tocopherol. All the obtained results were compared to those of n-hexane extraction: the α-tocopherol concentration in the oil extracted with SC-CO2 is higher than that obtained by n-hexane, while the overall oil yield is lower. © 2005 Elsevier Ltd. All rights reserved.

Notes

Cited By (since 1996): 14Export Date: 26 August 2010Source: Scopus

URLhttp://www.scopus.com/inward/record.url?eid=2-s2.0-33746638388&partnerID=40&md5=82c074e253ebb65bc82b3f8a0ab8978e
Citation Key349