CSW Flashcards
Five major components of wine
Water Alcohol Acid Sugar Phenolic compounds
A highly volatile acid, often found in vinegar
Acetic Acid
The main type of potable alcohol in wine
Ethanol (Ethyl alcohol)
An acid that tastes like green apples
Malic acid
The most prevalent acid found in both grapes and wine
Tartaric acid
Another term for tartrates
Wine diamonds
tartaric acid crystals
Conditions that can lead to a drop in malic acid
Warm/hot climate
The ripening phase
Over-ripe grapes
Malolactic fermentation
Acid not found in grapes, but often produced during secondary fermentation (mlf)
Lactic acid
Acid that is both a minor component of grapes, and a by-product of normal alcoholic fermentation
Succinic acid
Typical range of pH for most wines
2.9 to 3.9
Two main fermentable sugars found in grapes
Glucose and fructose
Sugar remaining in a wine post-fermentation
Residual sugar
Compounds that give red wine its color
Anthocyanins
Yellow pigments found in white wines
Flavonols (flavones)
Sources of tannin
Seeds, skins, and stems of grapes
Oak barrels/other oak products
Compound found in red wine known for health benefits
Resveratrol
What is meant by “polymerization”
When molecules (such as tannins) combine into longer molecule chains
Oxidized alcohols
Aldehydes
Molecules that result from the joining of an acid and an alcohol
Esters
Chemical reactions resulting from dissolved oxygen
Oxidation
In the US, wines containing more than ____ ppm of sulfur dioxide must carry a warning label
10 (ten)
Wine fault described as smelling like “burnt matches”
Sulfur dioxide
Substance that can smell like onions or garlic
Mercaptan
Wine fault described as smelling like “rotten eggs”
Hydrogen sulfide