GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 Phenolic composition of Xinomavro (vitis vinifera L.cv.) grapes from different regions of Greece

Phenolic composition of Xinomavro (vitis vinifera L.cv.) grapes from different regions of Greece

Abstract

Context and purpose of the study – Phenolic compounds are located in skins and seeds and are responsible for important sensory and quality attributes of red grapes and wines, such as astringency, bitterness and colour. However, little is known regarding Greek varieties.The aim of this study is to evaluate the grape phenolic content and to present data that characterize the red grape variety Xinomavro (Vitis Vinifera L. cv.) from different wine regions of Greece.

Material and methods – In this study berry attributes, skin and seed content of phenolic compounds of 18 grape samples from four different regions in Greece, namely Naoussa, Amyntaino, Goumenissa and Rapsani were analyzed. Skins and seeds were removed from berries and different solvents were used in them for the extraction of anthocyanins and tannins. For tannin estimation, the protein precipitation assay using bovine serum albumin was employed. Anthocyanins were determined in skins by High-performance liquid chromatography (HPLC).

Results – According to the results, significant differences were observed in berry weight among the different regions, however the distribution of berry components in mature berries, % skin per berry and % seed per berry weight ratio, had no difference between the samples. The contribution of skins and seeds in berry were 8.1% and 2.6%, respectively. The higher content of total tannins and total anthocyanins in berries were observed in grapes from Amyntaio region. Grapes from Naoussa region had the lower concentrations of skin tannins and total anthocyanins. Finally, the lower concentrations of seed tannins were determined in Goumenissa grapes.

DOI:

Publication date: September 8, 2023

Issue: GIESCO 2019

Type: Poster

Authors

Maria KYRALEOU1, Stamatina KALLITHRAKA1, Eugenia GKANIDI1, Stefanos KOUNDOURAS2

1 Department of Food Science & Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece
2 Laboratory of Viticulture, School of Agriculture, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

Contact the author

Keywords

grapes, anthocyanins, tannins, HPLC, Greek winegrape varieties

Tags

GiESCO | GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Towards a relationship between institutional clonal selection, mass selection and private clonal selection of grapevine cultivars

Each grape cultivar is composed of a population of individuals that are genetically different. Clonal selection has allowed the purification and improvement of the global quality

ASSESSING THE ROLE OF 27 KNOWN BITTER COMPOUNDS IN COMMERCIAL WHITE WINES COMBINING LC-MS QUANTIFICATION AND SENSORY ANALYSIS

The balance between the different flavours of a wine largely determines its perception and appreciation by the consumers. In white wines, sweetness and sourness are usually the two poles balancing the taste properties. The bitter flavour, on the other hand, is frequently associated with a loss of equilibrium and all white wines (dry and sweet, young and aged) are affected.
Several bitter compounds are already well-described in wines.

FERMENTATION POTENTIAL OF INDIGENOUS NON-SACCHAROMYCES YEASTS ISOLATED FROM MARAŠTINA GRAPES OF CROATIAN VINEYARDS

The interest in indigenous non-Saccharomyces yeast for use in wine production has increased in recent years because they contribute to the complex character of the wine. The aim of this work was to investigate the fermentation products of ten indigenous strains selected from a collection of native yeasts established at the Institute for Adriatic Crops and Karst Reclamation in 2021, previously isolated from Croatian Maraština grapes, belonging to Hypopichia pseudoburtonii, Metschnikowia pulcherrima, Metschnikowia sinensis, Metschnikowia chrysoperlae, Lachancea thermotolerans, Pichia kluyveri, Hanseniaspora uvarum, Hanseniaspora guillermondii, Hanseniaspora pseudoguillermondii, and Starmerella apicola species, and compare it with commercial non-Saccharomyces and Saccharomyces strains.

Red wine extract and resveratrol from grapevines could counteract AMD by inhibiting angiogenesis promoted by VEGF pathway in human retinal cells

Age-related macular degeneration (AMD) that is the main cause of visual impairment and blindness in Europe which is characterized by damages in the central part of the retina, the macula. This degenerative disease of the retina is mainly due to the molecular mechanism involving the production and secretion of vascular endothelial growth factor (VEF). Despite therapeutic advances thanks

Empreinte carbone et environnementale du vin en France : chiffres d’impact et bonnes pratiques à mettre en œuvre

Increasing concentrations of greenhouse gases (GHGs) in the atmosphere due to human activities are leading to a rise in the average temperature of the atmosphere. among the scenarios established by the un’s intergovernmental panel on climate change (IPCC), only two enable us to achieve the minimum objective of the paris agreements signed at cop 21 in 2015: staying below +2°c after 2050. both scenarios forecast a rapid reduction in GHG emissions as early as 2025, thanks to strong international cooperation, the priority given to sustainable development and responsible consumer choices.