The phenolic compound present in a bottle of wine slowly changes as it ages. The most important component of wine is tannin which binds with proteins. High tannin containing wine inhibits saliva’s ability to lubricate mouth and imparts astringent feeling in mouth. Aged wine undergoes polymerization of tannins. This makes tannin sediments settle to the bottom of the container and lose its property to bind with proteins. Aged wines are very aromatic and possess fruity flavors. | The phenolic compound present in a bottle of wine slowly changes as it ages. The most important component of wine is tannin which binds with proteins. High tannin containing wine inhibits saliva’s ability to lubricate mouth and imparts astringent feeling in mouth. Aged wine undergoes polymerization of tannins. This makes tannin sediments settle to the bottom of the container and lose its property to bind with proteins. Aged wines are very aromatic and possess fruity flavors. |