Boil Flashcards
1
Q
Total evaporation rate formula
A
C = [(a-b)/a] x 100
A Volume wort before boiling
B volume after boil
C total evaporation rate
2
Q
Specific evaporation rate formula
A
C = (ax60)/b
A total evaporation rate
B wort boiling time
C evaporation rate (% per hour)
3
Q
What are the main components of wort
A
Carbohydrates
Nitrogenous constituents
Polyphenols
Hop constituents
Minerals and salts
Water
4
Q
What are some of the changes that occur in wort during boiling?
A
Sterilization
Isomerization of hops
Water evaporation
Break formation
5
Q
What is break?
A
When proteins are denatured and floc out of solution
6
Q
T/F - ph decreases during boil
A
True
7
Q
What are some disadvantages of direct heating?
A
Over boiling
Metal fatigue
Flavor changes
Heavily soiled heating surfaces
