Phenolic composition and physicochemical analysis of wines made with the Syrah grape under double pruning in the Brazilian high-altitude Cerrado
Abstract
This study explores the growing potential of vitiviniculture in Brazil’s Federal District, an emerging wine region marked by unique climatic conditions and innovative cultivation techniques. With the recent development of winter wine production using double pruning, this region demonstrates promising results, especially for the Syrah grape variety. The vines undergo two distinct annual cycles due to the absence of dormancy, typical in tropical viticulture. Physicochemical and phenolic composition of nine Syrah wine samples from the 2022 and 2023 harvests were analysed. Results showed significant year-to-year differences: 2022 wines had higher total phenolic compounds (76.68±10.42 mg/L) (p=0.0221) and cyanidin (19.19±1.32 mg/L) (p=0.036) levels, while 2023 samples had greater resveratrol (9.36±0.66 mg/L) (p<0.0001) and catechin (54.20±2.31 mg/L) (p=0.0065) contents. These variations may be attributed to environmental factors, as temperature fluctuations and rainfall disparities. Despite these differences, all wines exhibited a robust phenolic profile, indicating strong potential for the region’s wines. The findings suggest the feasibility of a future designation of origin, highlighting the need for further studies.
DOI:
Publication date: 22/09/2025
Issue: 46th World Congress of Vine and Wine
Type: Oral
Authors
1 Laboratório de Referência Enológica Evanir da Silva (LAREN/SEAPI). Avenida da Vindima, 1855 – Exposição, 95084-470 Caxias do Sul, RS, Brazil
2 Programa de Pós Graduação em Farmacologia e Terapêutica. Ramiro Barcelos, 2600, 6° floor, 90050170, Porto Alegre – RS, Brazil
3 Associação Brasileira de Sommelier – RS – R. Gen. Osório, 450 – São Bento, 95703-154, Bento Gonçalves – RS, Brazil
4 Vinícola Brasília. BR-251, KM 07 – PADF, 71589-899, Brasília – DF, Brazil
5 Instituto Federal de Brasília (IFB). SGAN Quadra 610 Módulos D, E, F, G – Asa Norte, 70830-450, Brasília – DF, Brazil