In this work milled grape seeds from Vitis Vinifera were leached with supercritical carbon dioxide (SC-CO2) to assess the opportunity to obtain and a-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 alpha-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 degrees C and ground seed fragment size in the range 300-425 mu m; under these conditions the extracted oil contains as much as 265 ppm alpha-tocopherol. All the obtained results were compared to those of n-hexane extraction: the alpha-tocopherol concentration in the oil extracted with SC-CO2 is higher than that obtained by n-hexane, while the overall oil yield is lower. (c) 2005 Elsevier Ltd. All rights reserved.

Improving the extraction of alpha-tocopherol-enriched oil from grape seeds by supercritical CO2. Optimisation of the extraction conditions / Bravi, Marco; F., Spinoglio; Verdone, Nicola; M., Adami; A., Aliboni; A., D'Andrea; A., De Santis; D., Ferri. - In: JOURNAL OF FOOD ENGINEERING. - ISSN 0260-8774. - STAMPA. - 78:2(2007), pp. 488-493. [10.1016/j.jfoodeng.2005.10.017]

Improving the extraction of alpha-tocopherol-enriched oil from grape seeds by supercritical CO2. Optimisation of the extraction conditions

BRAVI, Marco;VERDONE, Nicola;
2007

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 a-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 alpha-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 degrees C and ground seed fragment size in the range 300-425 mu m; under these conditions the extracted oil contains as much as 265 ppm alpha-tocopherol. All the obtained results were compared to those of n-hexane extraction: the alpha-tocopherol concentration in the oil extracted with SC-CO2 is higher than that obtained by n-hexane, while the overall oil yield is lower. (c) 2005 Elsevier Ltd. All rights reserved.
2007
alpha-tocopherol; carbon dioxide; grape seed; supercritical fluid extraction (sfe); α-tocopherol
01 Pubblicazione su rivista::01a Articolo in rivista
Improving the extraction of alpha-tocopherol-enriched oil from grape seeds by supercritical CO2. Optimisation of the extraction conditions / Bravi, Marco; F., Spinoglio; Verdone, Nicola; M., Adami; A., Aliboni; A., D'Andrea; A., De Santis; D., Ferri. - In: JOURNAL OF FOOD ENGINEERING. - ISSN 0260-8774. - STAMPA. - 78:2(2007), pp. 488-493. [10.1016/j.jfoodeng.2005.10.017]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/72206
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