Combining Different Approaches for Grape Pomace Valorization: Polyphenols Extraction and Composting of the Exhausted Biomass

Matteo Perra, Alba Cuena-Lombraña, Gianluigi Bacchetta, Maria Letizia Manca, Maria Manconi, Richard G. Maroun, Aldo Muntoni, Carlo Ignazio Giovanni Tuberoso, Katarzyna A. Gil and Giorgia De Gioannis ()
Additional contact information
Matteo Perra: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Alba Cuena-Lombraña: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Gianluigi Bacchetta: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Maria Letizia Manca: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Maria Manconi: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Richard G. Maroun: Centre d’Analyses et de Recherche, Unité de Recherche TVA, Laboratoire CTA, Faculté des Sciences, Université Saint-Joseph, B.P. 17-5208 Riad El Solh, Beirut P.O. Box 17-5208, Lebanon
Aldo Muntoni: DICAAR—Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza D’Armi 1, 09123 Cagliari, Italy
Carlo Ignazio Giovanni Tuberoso: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Katarzyna A. Gil: Department of Life and Environmental Sciences, University of Cagliari, Via Ospedale 72, 09124 Cagliari, Italy
Giorgia De Gioannis: DICAAR—Department of Civil and Environmental Engineering and Architecture, University of Cagliari, Piazza D’Armi 1, 09123 Cagliari, Italy

Sustainability, 2022, vol. 14, issue 17, 1-17

Abstract: Grape pomace represents 60%, by weight, of the solid side-streams of the wine-making process. The quantities produced, seasonality, and the presence of polyphenols pose economic and environmental issues that require proper management approaches based on the principles of sustainability and circular economy. The present work focuses on the combined application of solid–liquid extraction of polyphenols from ground grape pomace using a hydroethanolic mixture and the composting of the exhausted pomace. The obtained results support the possibility of recovering approximately 76.5 g of extract per kg of dry grape pomace (or 1.8 g of total phenols per kg of dry grape pomace). The composting process was not affected by the extraction process. On the contrary, the composting process was enhanced by the pomace particle size reduction, in terms of final biostability and content of humic acids.

Keywords: Cannonau cultivar; solid-liquid extraction; compost quality; humification index; seedlings; plant growth (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/17/10690/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/17/10690/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:17:p:10690-:d:899422

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().