Characterization of an Antioxidant and Antimicrobial Extract from Cool Climate, White Grape Marc.

Show simple item record Olejar Jr, Kenneth en Ricci, Arianna en Swift, Simon en Zujovic, Zoran en Gordon, Keith C en Fedrizzi, Bruno en Versari, Andrea en Kilmartin, Paul en 2019-10-02T01:06:34Z en 2019-07-20 en
dc.identifier.citation Antioxidants (Basel, Switzerland) 8(7) 20 Jul 2019 en
dc.identifier.issn 2076-3921 en
dc.identifier.uri en
dc.description.abstract Valorization of agricultural waste has become increasingly important. Wastes generated by wineries are high in phenolic compounds with antioxidant and antibacterial properties, which contribute to phytotoxicity, making their immediate use for agricultural means limited. Utilizing a water-based extraction method, the phenolic compounds from winery waste were extracted and purified. The resulting extract was characterized for phenolic composition using high-pressure liquid chromatography-ultraviolet/visible and electrochemical detectors (HPLC-UV/Vis, ECD) for monomers, and spectral assessment of the tannins present using attenuated total reflectance- Fourier transform infrared (ATR-FTIR), FT-Raman, and solid-state nuclear magnetic resonance (SSNMR) spectroscopies. The extract's antioxidant activity was assessed by the scavenging of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and Folin-Ciocalteu total phenolic assay, and was found to be as effective as a commercially obtained grape extract. The extract's antimicrobial efficacy was tested for minimum bactericidal concentration using Candida albicans, Escherichia coli 25922, and Staphylococcus aureus 6538, which resulted in greater efficacy against gram-positive bacteria as shown over gram-negative bacteria, which can be linked to both monomeric and tannin polyphenols, which have multiple modes of bactericidal action. en
dc.format.medium Electronic en
dc.language eng en
dc.relation.ispartofseries Antioxidants (Basel, Switzerland) en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri en
dc.rights.uri en
dc.title Characterization of an Antioxidant and Antimicrobial Extract from Cool Climate, White Grape Marc. en
dc.type Journal Article en
dc.identifier.doi 10.3390/antiox8070232 en
pubs.issue 7 en
pubs.volume 8 en
dc.rights.holder Copyright: The authors en
pubs.publication-status Published en
dc.rights.accessrights en
pubs.subtype research-article en
pubs.subtype Journal Article en
pubs.elements-id 778513 en Medical and Health Sciences en Medical Sciences en Molecular Medicine en Science en Chemistry en
dc.identifier.eissn 2076-3921 en
pubs.record-created-at-source-date 2019-07-24 en
pubs.dimensions-id 31330796 en

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