Author, as appears in the article.: Piccardo, Diego; Gonzalez-Neves, Gustavo; Favre, Guzman; Pascual, Olga; Miguel Canals, Joan; Zamora, Fernando;

Department: Bioquímica i Biotecnologia

URV's Author/s: Canals Bosch, Joan Miquel / PASCUAL GARCIA, OLGA / Zamora Marín, Fernando

Keywords: Winemaking techniques Wine composition Wine color Unripe grapes Tannat Pinot-noir Pigment composition Phenolic extraction Must replacement Merlot grapes Hot pre-fermentative maceration Grape composition Ethanol concentration Cabernet-sauvignon Anthocyanins

Abstract: This research aimed to evaluate the impact of different options for winemaking on the color composition of Uruguayan Tannat red wines. The techniques evaluated were the substitution of ripe grape juice with immature grape juice and the heating of the crushed grapes before fermentation, called must replacement and hot pre-fermentative maceration, respectively. These procedures were proposed to reduce the alcohol content and increase the phenolic composition of the wine, according to the expected effects of climate change and current trends in consumer preferences. The investigation was made over three consecutive years (2016, 2017, and 2018). Both winemaking techniques allow the enhancement of the chromatic characteristics of wines via the modification of the phenolic composition. Additionally, such techniques allow the overcoming of the well-known limitations in the extractability of anthocyanins presented by the Tannat cultivar. Hot pre-fermentative maceration increases the proportion of the most oxidizable molecules delphinidin-3-O-glucoside, cyanidin-3-O-glucoside, and petunidin-3-O-glucoside, suggesting heat inactivation of polyphenoloxidases enzymes. Must replacement and hot pre-fermentative maceration are technological alternatives that could significantly improve the intensity and chromatic characteristics of red wines.

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 2311-5637

Author's mail: fernando.zamora@urv.cat jmcanals@urv.cat

Author identifier: 0000-0002-4213-3528 0000-0003-1989-2574

Record's date: 2023-09-24

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2311-5637/5/3/80

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: 5 (3):

APA: Piccardo, Diego; Gonzalez-Neves, Gustavo; Favre, Guzman; Pascual, Olga; Miguel Canals, Joan; Zamora, Fernando; (2019). Impact of Must Replacement and Hot Pre-Fermentative Maceration on the Color of Uruguayan Tannat Red Wines. Fermentation, 5(3), -. DOI: 10.3390/fermentation5030080

Article's DOI: 10.3390/fermentation5030080

Entity: Universitat Rovira i Virgili

Journal publication year: 2019

Publication Type: Journal Publications