WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 1 - WAC - Posters 9 Antioxidant activity of grape seed and skin extract during ripening

Antioxidant activity of grape seed and skin extract during ripening

Abstract

Reactive oxygen species (ROS) play an important physiological role in the body’s defense and being involved in numerous signaling pathways 1, 2. When the balance between oxidant and antioxidant species is altered in favor of ROS, oxidative stress is generated. In this condition the cells are damaged as the ROS oxidize important cellular components, such as proteins, lipids, nucleic acids and carbohydrates. The damage caused at the cellular level has repercussions on a systemic level favoring the appearance of various chronic and inflammatory diseases, such as cancer, cardiovascular diseases, type 2 diabetes and Alzheimer’s disease 3, 4. A way to keep the equilibrium in the organism is the intake of alimentary antioxidants that work synergistically with the endogenous ones to keep the good state of health. Dietary polyphenols are one of the most important groups of natural antioxidants, they are secondary metabolites found in fruits, vegetables, cereals, tea, wine. Grape is known to be one of the richest foods in polyphenols and the antioxidant activity of the grape is directly related to the phenolic concentration and composition, which varies during the ripening. In this work the antioxidant activity of grape seed and skin extracts of the red varieties Syrah, Tannat and Merlot during the ripening were evaluated through in vitro assays. The reference method Folin-Ciocalteu was used for the determination of the total polyphenol content (TPC) and the total antioxidant capacity (TAC) was determined through the radical scavenging assay using 1.1 -diphenyl-2-picrylhydrazyl (DPPH).5 The results of the analyses show that the seed extracts were richer in polyphenols than the skin extracts and had the highest antioxidant potential for all the grape ripening stages. The highest TPC and TAC values were found at the green stage for skins, at veraison for seeds.

[1] P. Tai, M. Ascoli, Reactive oxygen species (ROS) play a critical role in the cAMP-induced activation of Ras and the phosphorylation of ERK1/2 in Ledydig cells. Molecular endocrinology 25 (2011) 885-893.

[2] M. Valko, D. Leibfritz, J. Moncol, M. T. D. Cronin, M. Mazur, J. Telser, Free radicals and antioxidants in normal physiological function and human disease. The International Journal of Biochemistry & Cell Biology 39,1 (2007) 44-84.

[3] Grune, R. Shringarpure, N. Sitte, K. Davies, Age-Related changes in protein oxidation and proteolysis in mammalian cells. Journal of Gerontology, 56A (2001), B459-B467.

[4] N. Noguchi, E. Niki, Phenolic antioxidants: A rationale for design and evaluation of novel antioxidant drug for atherosclerosis. Free Radical Biology & Medicine, 28 (2000), 1538-1546.

[5] V.S. Chedea, R. M. Pop, Total polyphenol content and antioxidant DPPH assays on biological samples. In R. R. Watson (Ed.), Polyphenols in plants (2019) 169-183.

DOI:

Publication date: June 27, 2022

Issue: WAC 2022

Type: Article

Authors

Adriana Capozzi, Luca Garcia, Karen Lambert, Cédric Saucier

Presenting author

Adriana Capozzi – SPO, Université de Montpellier, INRAe, Montpellier SupAgro, 34000 Montpellier, France

SPO, Université de Montpellier, INRAe, Montpellier SupAgro, 34000 Montpellier, France | PhyMedExp, Université de Montpellier, INSERM U1046, UMR CNRS, 9412, Montpellier, France | SPO, Université de Montpellier, INRAe, Montpellier SupAgro, 34000 Montpellier, France

Contact the author

Keywords

skin-seeds-antioxidant activity-polyphenols-grape

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Zoning for drinking, tasting the territory place (“Great Zonation”): first considerations and methodology

Following the idea of « Grande Filiera » (GF) (Great chain), of « Grande Zonazione » (GZ) (Great Zonation), of “interpretation, estimation and valorisation of vineyards and wines landscape, of “qualities”(we have classified more than ninety), of quality economy.

Bioprospecting of native Metschnikowia pulcherrima strains for biocontrol and aroma enhancement in the wine production chain

Metschnikowia pulcherrima is a well-studied non-conventional oenological yeast due to its positive contributions to winemaking as a bioprotective agent and as an aroma-enhancing starter in sequential fermentations with Saccharomyces cerevisiae (Binati et al., 2023; Canonico et al., 2023).

Sustaining wine identity through intra-varietal diversification

With contemporary climate change, cultivated Vitis vinifera L. is at risk as climate is a critical component in defining ecologically fitted plant materiel. While winegrowers can draw on the rich diversity among grapevine varieties to limit expected impacts (Morales-Castilla et al., 2020), replacing a signature variety that has created a sense of local distinctiveness may lead to several challenges. In order to sustain wine identity in uncertain climate outcomes, the study of intra-varietal diversity is important to reflect the adaptive and evolutionary potential of current cultivated varieties. The aim of this ongoing study is to understand to what extent can intra-varietal diversity be a climate change adaptation solution. With a focus on early (Sauvignon blanc, Riesling, Grolleau, Pinot noir) to moderate late (Chenin, Petit Verdot, Cabernet franc) ripening varieties, data was collected for flowering and veraison for the various studied accessions (from conservatory plots) and clones. For these phenological growing stages, heat requirements were established using nearby weather stations (adapted from the GFV model, Parker et al., 2013) and model performances were verified. Climate change projections were then integrated to predict the future behaviour of the intra-varietal diversity. Study findings highlight the strong phenotypic diversity of studied varieties and the importance of diversification to enhance climate change resilience. While model performances may require improvements, this study is the first step towards quantifying heat requirements of different clones and how they can provide adaptation solutions for winegrowers to sustain local wine identity in a global changing climate. As genetic diversity is an ongoing process through point mutations and epigenetic adaptations, perspective work is to explore clonal data from a wide variety of geographic locations.

Vers des systèmes viticoles économes en pesticide. Étude du réseau DEPHY-Vigne

Dans le cadre de TerclimPro 2025, Esther Fouillet a présenté un article IVES Technical Reviews. Retrouvez la présentation ci-dessous ainsi que l’article associé : https://ives-technicalreviews.eu/article/view/8318

Grapevine responses to red blotch disease – a structural-functional perspective of symptomatology development and fruit quality

Red Blotch disease caused by Grapevine red blotch-associated virus (GRBaV) is a severe concern to grape growers and winemakers in major grape-growing regions worldwide. One key aspect of all viruses, including Red Blotch, is their intimate association with cell components and anomalous structures following infection. Therefore, the objective of this study was to analyze symptomatology, vine function, fruit quality and ultrastructure of various tissues and document the relationship of ultrastructural cytopathology with the GRBaV infection in Pinot Noir and Merlot employing various microscopy techniques.