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Molecules 2017, 22(9), 1474; doi:10.3390/molecules22091474

Vegetable Oils as Alternative Solvents for Green Oleo-Extraction, Purification and Formulation of Food and Natural Products

1
Laboratoire GREEN, Université d’Avignon et des Pays de Vaucluse, INRA, UMR408, GREEN Extraction Team, F-84000 Avignon, France
2
Department of Chemistry, University of Lleida, Av. Alcalde Rovira Roure 191, 25198 Lleida, Spain
3
Department of Food Science and Engineering, College of Science and Engineering, Jinan University, Guangzhou 510632, China
*
Authors to whom correspondence should be addressed.
Received: 14 August 2017 / Revised: 28 August 2017 / Accepted: 2 September 2017 / Published: 5 September 2017
(This article belongs to the Section Green Chemistry)
View Full-Text   |   Download PDF [3017 KB, uploaded 5 September 2017]   |  

Abstract

Since solvents of petroleum origin are now strictly regulated worldwide, there is a growing demand for using greener, bio-based and renewable solvents for extraction, purification and formulation of natural and food products. The ideal alternative solvents are non-volatile organic compounds (VOCs) that have high dissolving power and flash point, together with low toxicity and less environmental impact. They should be obtained from renewable resources at a reasonable price and be easy to recycle. Based on the principles of Green Chemistry and Green Engineering, vegetable oils could become an ideal alternative solvent to extract compounds for purification, enrichment, or even pollution remediation. This review presents an overview of vegetable oils as solvents enriched with various bioactive compounds from natural resources, as well as the relationship between dissolving power of non-polar and polar bioactive components with the function of fatty acids and/or lipid classes in vegetable oils, and other minor components. A focus on simulation of solvent-solute interactions and a discussion of polar paradox theory propose a mechanism explaining the phenomena of dissolving polar and non-polar bioactive components in vegetable oils as green solvents with variable polarity. View Full-Text
Keywords: vegetable oils; alternative bio-based solvents; green oleo-extraction; natural products; polar paradox; solvent-solute simulation vegetable oils; alternative bio-based solvents; green oleo-extraction; natural products; polar paradox; solvent-solute simulation
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Yara-Varón, E.; Li, Y.; Balcells, M.; Canela-Garayoa, R.; Fabiano-Tixier, A.-S.; Chemat, F. Vegetable Oils as Alternative Solvents for Green Oleo-Extraction, Purification and Formulation of Food and Natural Products. Molecules 2017, 22, 1474.

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