CSW 2024 Flashcards
5 major chemical components of wine
water
alcohol
acid
sugar
phenolic compounds
what % of wine is water
80-90%
type of alcohol that results from fermentation
ethyl alcohol or ethanol
four other types of alcohol that commonly appear in wine
glycerol
methyl (or methanol)
fusel
higher alcohols
what carries aromas of wine to nose
evaporating ethanol
what does it mean that ethanol is volatile?
it evaporates easily
what caues fine legs or tears?
alcohol
what % of wine is acid
0.5% to 0.75%
name 6 types of acid commonly found in wine
tartaric
malic
citric
lactic
acetic
succinic
what is most common acid in both grape and wine
tarteric
which acid in wine can become visibile and in what form
tarteric acid in the form of crystals, known as tartrates or wine diamonds (happens at low temperatures and will not turn back to liquid)
which of the six acids is highest in pH
tartaric
what is malic acid often associated with (other food)
green apples
what types of grapes are most likely to contain malic acid
underripe grapes or cool climate grapes
which acid decreases with heat or overripening
malic acid