Polyphenolic Profile and Antioxidant Activity of Whole Grape Juices from Vitis labrusca and Brazilian Hybrid Grapes in Two Training Systems

Author(s)

Domingues Neto, Francisco Jose ; Pimentel, Adilson ; Borges, Cristine Vanz ; Rodrigues, Joao Domingos ; Figueira, Ricardo ; Moura, Mara Fernandes ; Minatel, Igor Otavio ; Nunes, Aline ; Lima, Giuseppina Pace Pereira ; Tecchio, Marco Antonio

• Document type: Journal article
• Source: ANTIOXIDANTS; v. 13, n. 9, p. 17-pg., 2024-09-01.

Abstract

The phenolic profile and antioxidant activity of whole grape juices from Vitis labrusca and Brazilian hybrids in two training systems were analyzed. Genotypes of V. labrusca ('Bord & ocirc;' and 'Isabel') and Brazilian hybrids ('IAC 138-22 M & aacute;ximo' and 'BRS Violeta') were grafted onto the rootstock 'IAC 766 Campinas' (106-8 'Mgt' x Vitis caribaea) and trained on low and high trellis. After harvest, the grapes were destemmed and the berries macerated in a roller crusher. Following hot extraction without pressurization of the pomace and gentle pressing of the blend (skins, must, and seeds), the juices were bottled in amber glass bottles and pasteurized. The physicochemical and colorimetric parameters of the juices, as well as the levels of flavonoids, phenolic compounds, total monomeric anthocyanins, antioxidant activity, and polyphenolic profile, were evaluated. The juices were also subjected to sensory analysis (CAAE: 65549817.7.0000.5411). There was broad variation in all assessed characteristics. The results obtained demonstrate that the training system and grape genotype used in juice production are highly related to the presence of sugars, acidity, and bioactive compounds. Juices made from 'Bord & ocirc;', 'IAC 138-22 M & aacute;ximo' and 'BRS Violeta' grapes stood out from 'Isabel' juices, the main grape variety used in Brazilian juice and wine production. All juices contain bioactive compounds in considerable concentrations, indicating beverages with high antioxidant activity and, consequently, high biological potential, with the use of high trellis in vine cultivation potentially increasing concentrations. (AU)

• FAPESP's process: 16/07510-2 - IMPACTS OF ROOTSTOCKS AND CONDUCTION SYSTEMS IN AGRONOMIC POTENTIAL, BIOACTIVE COMPOUNDS AND BIOGENIC AMINES IN GRAPES AND JUICES
• Grantee: Francisco José Domingues Neto
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 23/03886-1 - Biochemical characterization of the macroalgae Kappaphycus alvarezii and its action in biological models: from field to cell
• Grantee: Aline Nunes
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 15/16440-5 - PHENOLOGY, YIELD AND QUALITY POST-HARVEST OF GRAPES VARIETY FOR JUICE AND WINE CULTIVATED IN DIFFERENT REGIONS IN SÃO PAULO STATE
• Grantee: Marco Antonio Tecchio
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/03440-6 - Behaviour of table and wine grapes cultivars grafted on different rootstocks
• Grantee: Marco Antonio Tecchio
• Support Opportunities: Regular Research Grants