Pasteurization Flashcards
1
Q
Define pasteurization unit
A
1 PU = substance being held for 1 minute at 60c
2
Q
Name 5 factors that must be considered in biological preservation of beer
A
Number of microorganisms
Composition and amount of beer
Temperature
Contact time
Ph conditions
3
Q
What is the container cold spot
A
Middle of the bottle/can. Takes longest to heat up and cool down
4
Q
Advantages of flash pasteurization
A
Lower thermal load
Smaller space required
Shorter holding time
5
Q
What is the flow scheme of modern flash pasteurization?
A
All thru heatx plates:
Pre heating zone
Hot holding zone
Booster pump
Potentially cooling zone
6
Q
What is the minimum holding time on tunnel pasteurization?
A
20 minutes
