Wine Chemistry Flashcards
1
Q
Define Anthocyanins
A
- Compounds the give red wine it’s color
- influenced but amount of anthocyanins and acid level
- high acid =redder
- low acid = bluer
2
Q
Define Flavanols
A
- Yellow pigments found in white wine
- increases with exposure to light
Thus warmer climate white wines have a more golden hue than cool climate whites
3
Q
Define Vanillin
A
- not found in grapes, found in oak (oak barrels)
4
Q
Define Aldehydes
A
- Oxidized alcohols that form when exposed to air
-
5
Q
What is TCA
A
A chemical
2,4,6-Trichloranisol
A mold coming from bark of cork trees
6
Q
Detail wines high in SO2
A
- acrid smell similar to burnt matches
- more acid in the wine the more pronounced the SO2
7
Q
Detail a wine high in Hydrogen Sulfied H2S
A
When a silver rich wine sits too long without oxygen, it smells like rotten eggs
8
Q
What is Mercaptan
A
- Ethyl Mercaptan May form as a combination of silver and ethanol.
- Very unpleasant odor of garlic or onions.
