title: Pressurized liquid extraction of vitamin E from Brazilian grape seed oil.
abstract: The goal of this paper is to optimize the pressurized liquid extraction (PLE) of vitamin E from grape seed oil from residues of the wine industry. For this purpose an experimental planning to optimize the extraction of Brazilian grape seed oil by means of PLE with hexane as solvent was applied and the results are compared with conventional methods (Soxhlet and mechanical press extraction). Vitamin E was separated and analyzed using HPLC with UV detection. This study demonstrates the ability of the PLE in extracting grape seed oil rich in vitamin E.
authors.affiliation: Instituto de Química, UFRGS, Porto Alegre, RS, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, RS, Brazil. lisiane@freitaspi.com.br
authors.forename: Lisiane
authors.initials: L
authors.lastname: Dos Santos Freitas
authors.forename: Rosângela Assis
authors.initials: RA
authors.lastname: Jacques
authors.forename: Marc François
authors.initials: MF
authors.lastname: Richter
authors.forename: Andréia Loviane da
authors.initials: AL
authors.lastname: Silva
authors.forename: Elina Bastos
authors.initials: EB
authors.lastname: Caramão
mesh_terms: D002851:Chromatography, High Pressure Liquid; D010938:Plant Oils / Q000737:chemistry*; D011312:Pressure; D012015:Reference Standards; D014810:Vitamin E / Q000302:isolation & purification*; D027843:Vitis / Q000196:embryology*
chemical_list: D010938:Plant Oils; D014810:Vitamin E