Changes of Angiotensin I-Converting Enzyme Inhibitory Activity, Fibrinolytic Activity and β-Secretase Inhibitory Activity of Red Wines During Fermentation and Post-Fermentation

The cardiovascular angiotensin I-converting enzyme inhibitory activity, fibrinolytic activity and bbb-secretase inhibitory activity of four kinds of red wine were investigated during fermentation and post-fermentation. After 10 days of fermentation, the antihypertensive angiotensin I-converting enzyme (ACE) inhibitory activities of all the red wines ranged from 38.6% to 58.8%. However, the ACE inhibitory activities increased with the prolongation of the post-fermentation period; moreover, in the Vitis hybrid red wine, the ACE inhibitory activity reached its highest value, 76.9%, after 120 days of post-fermentation. During the fermentation and post-fermentation of all the red wines, fibrinolytic activity was weak or not detected. After 10 days of fermentation, Vitis labrusca B red wine exhibited the greatest antidementia β-secretase inhibitory activity of 54.8%, though β-secretase inhibitory activity decreased significantly to less than 10% during 120 days of post-fermentation. In conclusion, we obtained a highly valuable Vitis hybrid red wine that was fermented for 10 days at 25℃ with Vitis hybrid and S. cerevisiae K-7 and then post-fermentation for 120 days at 4℃.