title: Extraction and purification of high added value compounds from by-products of the winemaking chain using alternative/nonconventional processes/technologies.
abstract: Grape byproducts are today considered as a cheap source of valuable compounds since existent technologies allow the recovery of target compounds and their recycling. The goal of the current article is to explore the different recovery stages used by both conventional and alternative techniques and processes. Alternative pre-treatments techniques reviewed are: ultrasounds, pulsed electric fields and high voltage discharges. In addition, nonconventional solvent extraction under high pressure, specifically, supercritical fluid extraction and subcritical water extraction are discussed. Finally alternative purification technologies, for example membrane processing were also examined. The intent is to describe the mechanisms involved by these alternative technologies and to summarize the work done on the improvement of the extraction process of phenolic compounds from winery by-products. With a focus on the developmental stage of each technology, highlighting the research need and challenges to be overcome for an industrial implementation of these unitary operations in the overall extraction process. A critical comparison of conventional and alternative techniques will be reviewed for ethe pre-treatment of raw material, the diffusion of polyphenols and the purification of these high added value compounds. This review intends to give the reader some key answers (costs, advantages, drawbacks) to help in the choice of alternative technologies for extraction purposes.
authors.affiliation: a Université de Bordeaux , Institut des Sciences de la Vigne et du Vin , EA 4577, Unité de recherche œnologie, Villenave d'Ornon , France.|b INRA, ISVV, USC 1366 Œnologie , Villenave d'Ornon , France.
authors.forename: Sami
authors.initials: S
authors.lastname: Yammine
authors.affiliation: c Sorbonne Universités , Université de technologie de Compiègne , EA 4297 TIMR, Centre de recherche Royallieu, Compiègne , France.
authors.forename: Sylène
authors.initials: S
authors.lastname: Brianceau
authors.affiliation: e SAS SOFRALAB, Epernay Cedex , France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Manteau
authors.affiliation: c Sorbonne Universités , Université de technologie de Compiègne , EA 4297 TIMR, Centre de recherche Royallieu, Compiègne , France.|d Ecole Supérieure de Chimie Organique et Minérale , EA 4297 TIMR, Compiègne , France.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Turk
authors.affiliation: a Université de Bordeaux , Institut des Sciences de la Vigne et du Vin , EA 4577, Unité de recherche œnologie, Villenave d'Ornon , France.|b INRA, ISVV, USC 1366 Œnologie , Villenave d'Ornon , France.
authors.forename: Rémy
authors.initials: R
authors.lastname: Ghidossi
authors.affiliation: c Sorbonne Universités , Université de technologie de Compiègne , EA 4297 TIMR, Centre de recherche Royallieu, Compiègne , France.
authors.forename: Eugène
authors.initials: E
authors.lastname: Vorobiev
authors.affiliation: a Université de Bordeaux , Institut des Sciences de la Vigne et du Vin , EA 4577, Unité de recherche œnologie, Villenave d'Ornon , France.|b INRA, ISVV, USC 1366 Œnologie , Villenave d'Ornon , France.
authors.forename: Martine
authors.initials: M
authors.lastname: Mietton-Peuchot
mesh_terms: D055664:Electrochemical Techniques; D005524:Food Technology; D059808:Polyphenols / Q000737:chemistry*; D012997:Solvents; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D059808:Polyphenols; D012997:Solvents
keywords: Extraction; grape by-products; high added value compounds; nonconventional technologies; purification