Science of Tasting Flashcards
1
Q
Difference between acetic as opposed to malic or tartaric
A
Acetic is volatile as opposed to Malic/Tartaric which are fixed
2
Q
What two strains of bacteria cause which types of VA?
A
Vinegar aromas…. Gluconobacter Oxydan and Acetobacter aceti. G oxydan comes on moldy fruit and feeds on sugar at the start of fermentation. A aceti appear post fermentation and require oxygen to grow. It is especially prevalent when wines aren’t topped off or when they are racked/oxidized.
