Work

Double-layer curtain canopy systems modulate volatile compounds and sensory attributes of ‘Syrah’ grapes and wines in hot-arid regions

Year: 2026

Type: article

Abstract: Climate change threatens wine quality in hot-arid regions. This two-year study (2023 and 2024) evaluated double-layer curtain (DLC) canopy systems in the Turpan-Hami Basin using Vitis vinifera ‘Syrah’, with vertical shoot positioning (VSP) as control. DLC-100V moderated cluster-zone temperature and humidity, delayed sugar accumulation, and increased titratable acidity and tartaric acid in grapes, leading to lower ethanol and higher acidity in wines. DLC treatments increased ester and C6/C9 concentrations in grapes in 2023, with the highest terpenes under DLC-100V; norisoprenoids did not differ. Wine volatile profiles showed similar vintage-dependent responses. Aroma series and sensory attributes were altered, with DLC-100V showing consistent improvements in acidity, aroma intensity, and balance. Overall, DLC-100V was the most effective configuration for ‘Syrah’ under these conditions. These findings suggest that optimizing canopy architecture can mitigate heat stress and improve grape and wine quality in hot-arid regions.

Source: Food Chemistry X

DOI: 10.1016/j.fochx.2026.104667