The clear juice fermentation technique for white wines suggests that white grape seeds, rich in flavan-3-ols and proanthocyanidins, are not effectively utilized in the winemaking process. This study incorporated 'Gew & uuml;rztraminer' grape seeds into 'Cabernet Sauvignon' must before cold soak to investigate how the resultant red wines' phenolic compound profiles, color, and astringency were affected. The results showed that adding seeds primarily inhibited the leaching of flavan-3-ols from both skins and seeds. A significant increase in the levels of flavan-3-ols, tannins, and phenolic acids, as well as direct and aldehyde-bridged flavan-3-ol-anthocyanin polymers, were observed in the wines with additional seeds. This led to the improvement in the wine' red hue and its resistance to SO2 bleaching. Furthermore, the wine added with seeds exhibited stronger astringency compared to those without. The findings provide a promising winemaking strategy to improve color stability and intensify the astringency of red wines through the utilization of grape seeds.
机构:
Univ Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, BrazilUniv Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, Brazil
Panizzon, Tiago
Salton, Gregorio Bircke
论文数: 0引用数: 0
h-index: 0
机构:
Salton Winery, Mario Salton St,300, BR-95710000 Bento Goncalves, BrazilUniv Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, Brazil
Salton, Gregorio Bircke
Schneider, Vania Elisabete
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Sergipe, Grad Program Civil Engn PROEC, Marcelo Deda Chagas Ave, BR-49107230 Sao Cristovao, Brazil
Trujillo Catholic Univ UCT, Grad Sch, Trujillo 13001, PeruUniv Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, Brazil
Schneider, Vania Elisabete
Poletto, Matheus
论文数: 0引用数: 0
h-index: 0
机构:
Univ Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, BrazilUniv Caxias, Grad Program Engn Proc & Technol PGEPROTEC, BR-95070560 Caxias Do Sul, Brazil