Viticultural wood waste as a source of polyphenols of interest: Opportunities and perspectives through conventional and emerging extraction methods

Marion Zwingelstein (1, 2, 3) , Micheline Draye (1, 2) , Jean-Luc Besombes (1, 2) , Christine Piot (1, 2) , Gregory Chatel (1, 2)

1 LCME - Laboratoire de Chimie Moléculaire et Environnement
2 EDYTEM - Environnements, Dynamiques et Territoires de Montagne
3 ADEME - Agence de l'Environnement et de la Maîtrise de l'Energie

Viticultural waste has been widely demonstrated to contain high-added value compounds named the stilbenes. Among them, trans-resveratrol (Rsv) and trans-εviniferin (Vf) are the most abundant in particular in grape canes. Various emerging methods such as ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) or pressurized solvent extraction (PSE) have been studied to recover Rsv and Vf from grape canes in order to enhance their extraction. This paper gives a critical overview of the techniques used to this end, integrating conventional and nonconventional methods investigated in the literature as well as those used in industrial processes. It finally highlights that the unconventional technics are usually less timeconsuming than conventional extraction ones but further investigations for the discussed compounds and biomass are needed to optimize and understand the influence of the individual parameters of each extraction process.

Mots clés: grape canes; stilbenes; extraction efficiency; trans-resveratrol; trans-ε-viniferin

Domaines: Autre

Marion Zwingelstein, Micheline Draye, Jean-Luc Besombes, Christine Piot, Gregory Chatel. Viticultural wood waste as a source of polyphenols of interest: Opportunities and perspectives through conventional and emerging extraction methods. Waste Management, 2020, 102, pp.782-794. ⟨10.1016/j.wasman.2019.11.034⟩. ⟨hal-03147111⟩