Flavor Stability Flashcards
1
Q
List some flavor characteristics of old beer
A
Sweet
Oxidized
Lightstruck
2
Q
List 3 tests to detect aging in beer
A
Natural aging
Forced aging
ESR method
3
Q
What is the effect of Temperature on beer aging?
A
High temp can lead to formation of carbonyls (noneal) - fatty acids
4
Q
List 5 measures to reduce oxidation after the brewhouse
A
Don’t suck up air after tank emptying during transfer
Check for leakage at pump seals
Air bubbles in piping
Tanks not totally filled
Air in bottle neck during filling
5
Q
What can we influence about dynamics of beer flavor?
A
Concentration of precursors
Physical oxygen uptake
Chemical reaction of oxygen with beer compounds
