Understanding polysulfide evolution in wine: insights from accelerated ageing and real-time cellaring in different packaging.

ABSTRACT: Volatile sulfur compounds (VSCs) and non-volatile biothiols play a crucial role in wine quality. Certain sulfhydryl compounds can react to form odourless polysulfides (RSS_nSR') that potentially contribute to the development of sulfur off-odours during winemaking and storage. This study investigated the evolution of sulfur species in Chardonnay and Shiraz wine during real-time and accelerated ageing in glass bottles with different closures and in aluminium cans. Moderate glutathione (GSH) accumulation was accompanied by disulfide formation, with GSH trisulfide (GS-S-SG), tetrasulfide (GS-S₂-SG), and mixed cysteine-GSH tetrasulfide (Cys-S₂-SG) displaying compound- and matrix-specific trends. Can packaging maintained higher amounts of VSCs, sulfur dioxide, and

SUBMITTER: Hou Y 

PROVIDER: S-EPMC12825059 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature