Effects of Different Maceration Times on the Chemical and Sensory Characteristics of Cabernet Sauvignon Grapes Wine

Polyphenols and aroma compounds are major contributors to wine quality and are primarily derived from grape skins and seeds. This study investigated the effects of crushing degree and maceration time on the phenolic and aroma profiles of Cabernet Sauvignon wine. Wines were produced under different crushing degrees (50-100%) and maceration times (5-13 d), and their phenolic and aroma compounds were analyzed by ultraviolet-visible spectrophotometry (UV-Vis) and gas chromatography-mass spectrometry (GC-MS). The results showed that both crushing degree and maceration time significantly affected the extraction and accumulation of these key compounds. A crushing degree of 70-80% combined with 7-9 d of maceration was more suitable for producing wines with a balanced color, aroma, and taste profile. In contrast, complete crushing (100%) and 11 d of maceration were more favorable for enhancing antioxidant potential, with flavanol and total phenol contents reaching 346.6 and 115.9 mg/L, respectively. These findings provide a theoretical basis for optimizing vinification conditions and improving wine quality to meet diverse consumer preferences.