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From winery waste to bioactive compounds and new polymeric biocomposites: A contribution to the circular economy concept
University of Bologna, Italy.
University of Bologna, Italy.
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Jordbruk och livsmedel.ORCID-id: 0000-0002-5783-3017
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Jordbruk och livsmedel.ORCID-id: 0000-0003-3171-1203
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2020 (Engelska)Ingår i: Journal of Advanced Research, ISSN 2090-1232, Vol. 24, s. 1-11Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The paper aims at optimising and validating possible routes toward the full valorisation of grape agrowaste to produce bioactive molecules and new materials. Starting from Merlot red pomace, phenol complex mixtures were successfully extracted by using two different approaches. Extracts obtained by solvent-based (SE) technique contained up to 46.9 gGAeq/kgDW of total phenols. Depending on the used solvent, the prevalence of compounds belonging to different phenol families was achieved. Pressurized liquid extraction (PLE) gave higher total phenol yields (up to 79 gGAeq/kgDW) but a lower range of extracted compounds. All liquid extracts exerted strong antioxidant properties. Moreover, both SE and PLE extraction solid residues were directly exploited (between 5 and 20% w/w) to prepare biocomposite materials by direct mixing via an eco-friendly approach with PHBV polymer. The final composites showed mechanical characteristics similar to PHVB matrix. The use of pomace residues in biocomposites could therefore bring both to the reduction of the cost of the final material, as a lower amount of costly PHBV is used. The present research demonstrated the full valorisation of grape pomace, an agrowaste produced every year in large amounts and having a significant environmental impact.

Ort, förlag, år, upplaga, sidor
Elsevier B.V. , 2020. Vol. 24, s. 1-11
Nyckelord [en]
Biocomposites, Biowaste, Grape pomace, Polyphenols, Pressurized liquid extraction, Solvent-based extraction
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Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-44442DOI: 10.1016/j.jare.2020.02.015Scopus ID: 2-s2.0-85080998586OAI: oai:DiVA.org:ri-44442DiVA, id: diva2:1415131
Anmärkning

Funding details: Horizon 2020 Framework Programme, H2020, 688338; Funding text 1: This work was supported by the NoAW project (“Innovative approaches to turn agricultural waste into ecological and economic assets”), founded by the European Union Horizon 2020 research and innovation programme under the grant agreement No 688338 .

Tillgänglig från: 2020-03-17 Skapad: 2020-03-17 Senast uppdaterad: 2021-08-19Bibliografiskt granskad

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Maria, EhrnellEliasson, LovisaXanthakis, Epameinondas

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