Particularities of Syrah wines from different growing regions of Southern Brazil: grapevine phenology and bioactive compounds

Abstract

The aim of this study was to monitor the phenological parameters of grapevine () of Syrah variety recently introduced in the region of Marari, Água Doce, Campos Novos and São Joaquim, Santa Catarina State (SC), Brazil, and to characterize the phenolic composition and antioxidant activity of wines produced from this variety of the vintages 2010 and 2011. The adaptation of the grapevine to climate conditions of these grape growing regions of Southern Brazil for this variety has also been assessed. The climate variations occurring between the phenological cycles of grapevine of Syrah for each growing region influenced the phenological extension and heat accumulation of the grapevine. The wines showed significant levels of phenolic compounds and high antioxidant activity, while catechin, a potent antioxidant, was the main phenolic compound quantified in wines. Positive correlations between the phenolic compounds and antioxidant activity were observed. The principal component analysis confirmed the influence of the growing region and vintages on the phenolic composition of wines, indicating the importance of climate conditions. This study identified possible phenolic markers indicative of climatic influence.

Rosé Sparkling Wines: Influence of Winemaking Practices on the Phytochemical Polyphenol During Aging on Lees and Commercial Storage

“…The tyrosol was detected at high concentrations in all samples of sparkling wines analyzed (Table and ). The concentration of tyrosol in the rosé sparkling wines in this study is higher than values previously reported for sparkling wines (Pozo‐Bayón, Hernández, Martín‐Álvarez, & Polo, ; Stefenon et al., ) and red wines (Gris et al., ; Sartor et al., ). It was observed that the addition of enological agents influenced the tyrosol concentration of the wines at the end of aging (T12) in relation to the control sample (Table and ).…”

Bioactive profiling of polyphenolics and oenological properties of red wines from Italian grapes (Vitis viniferaL.) cultivated in a selected subtropical region

“…Phenolic compounds such as flavonols and flavanols, mainly quercetin and catechin, as well as anthocyanins are generally associated with the antioxidant properties of red wines. [1,4,8] Indeed, the antioxidant activity was positively correlated with the phenolic content of all varietal wines (data not shown). All wines had abundant concentrations of monomeric and polymeric anthocyanins, and of both polymerised and non-polymerised polyphenols, determined as equivalents of catechin.…”

“…In fact, during the vintage period of 2011, the rainfall was approximately 1100 mm in the region of Campos Novos, while during the vintage of 2012, the rainfall was lower, approximately 900 mm. [8] The Ancellotta wines showed the highest colour intensity and colour density, with values up to 44.08 and 38.89, respectively, in wine samples from the vintage 2012. In comparison to the other wine varieties, the colour indexes were greatly lower in Nebbiolo wines.…”

“…Regarding physical-chemical properties, the alcohol content, pH, titratable acidity and the content of sulphur dioxide verified for the wine samples are consistent with that of red wines. [8,26,27] These parameters are essential to determine the oenological identity of wines. Hence, the adequacy of these parameters with regard to quality wines is a determinant factor when considering the potential of new growing regions, in this study, a selected region with subtropical climate.…”

“…The average of minimum and maximum air temperatures reported for this region in the vintages of 2011 and 2012 ranged from 11-17°C to 22-28°C, respectively. [8] The vineyards were planted in 2006, in a vertical trellis system. The seedlings of the Rebo variety were grafted on rootstock Kober 5BB; Ancellotta clone FEDIT 18, grafted on rootstock Paulsen 1103 ISV 1; Barbera clone AT 84, grafted rootstock 110R 151f; Nebbiolo clone CVT CN 142, rootstock 420A MI-Q14; and Teroldego clone SMA 133, rootstock Paulsen 1103 113F; all varieties were imported from Italy.…”