Pyranoanthocyanin
Encyclopedia
The pyranoanthocyanins are a type of pyranoflavonoid
s. They are chemical compounds formed in red wine
s by yeast during fermentation
processes or during controlled oxygenation
processes during the aging of wine
.
Pyranoflavonoid
The pyranoflavonoids are a type of flavonoids possessing a pyran group.Cyclocommunin is another natural pyranoflavonoid.-Pyranoisoflavones:* Alpinumisoflavone* Di-O-methylalpinumisoflavone* 4'-methyl-alpinumisoflavone...
s. They are chemical compounds formed in red wine
Wine
Wine is an alcoholic beverage, made of fermented fruit juice, usually from grapes. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, or other nutrients. Grape wine is produced by fermenting crushed grapes using various types of yeast. Yeast...
s by yeast during fermentation
Fermentation (wine)
The process of fermentation in wine turns grape juice into an alcoholic beverage. During fermentation, yeast interact with sugars in the juice to create ethanol, commonly known as ethyl alcohol, and carbon dioxide...
processes or during controlled oxygenation
Microoxygenation
Micro-oxygenation is a process used in winemaking to introduce oxygen into wine in a controlled manner. Developed in 1991 by Patrick DuCournau, working with the exceptionally tannic grape Tannat in Madiran, the process gained usage in modern winemaking following the 1996 authorization by the...
processes during the aging of wine
Aging of wine
The aging of wine, and its ability to potentially improve wine quality, distinguishes wine from most other consumable goods. While wine is perishable and capable of deteriorating, complex chemical reactions involving a wine's sugars, acids and phenolic compounds can alter the aroma, color,...
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Examples
- Hydroxyphenyl-pyranoanthocyanins
- Vinylpyranoanthocyanins
- Vitisin AVitisin A (pyranoanthocyanin)Vitisin A is a natural phenol found in red wines. It is a pyranoanthocyanin.-External links:*...
and BVitisin B (pyranoanthocyanin)Vitisin B is a natural phenol found in red wines. It is a pyranoanthocyanin.... - Pinotins
- Portosins