Milk And Processes Flashcards
What is the shelf life of semi-skimmed milk?
28+ days
What process does bottled raw milk undergo at 110°C?
Steam chamber for 10-30 minutes
What happens to bacteria during the sterilisation of milk?
ALL bacteria are killed
What happens to the taste and vitamins during the sterilisation process?
Different taste and loss of B and C vitamins
What is the heat treatment temperature and duration for UHT milk?
135°C for 1-4 seconds
How long can UHT milk last at ambient temperature?
Months
What are the changes in nutritional value and taste for UHT milk?
Slightly less nutritional value and slightly different taste
What is the heating process for pasteurised milk?
Heated to 72°C for 15 seconds, then rapidly cooled
What is the effect of pasteurisation on taste and nutritional value?
Little change from raw milk
What is the shelf life of pasteurised milk?
5+ days
What is the purpose of microfiltration in milk processing?
Separates milk from souring bacteria
What is the effect of microfiltration on taste and nutritional value?
No effect on taste or nutritional value
What is primary processing?
Processing foods straight after harvest or slaughter
Give an example of primary processing.
Wheat grain turned into flour
What is secondary processing?
Using primary processed foods to create other food products
Give an example of secondary processing.
Wheat flour turned into bread or pasta
