Pasteurization and canning

Question 1

What type of bacteria will grow in raw milk?

Answer 1

Mesophillic bacteria due to the ambient temps

Question 2

Why would microbial growth occur in pasteruized milk?

Answer 2

• Recontamination
• Heat resistant bacteria/non spore formers

Question 3

What are the most common organisms which spoil fruit juices?

Answer 3

Yeasts and moulds

Question 4

What did the botulinum cook discover?

Answer 4

It would take around 3 minutes to inactivate all botulinum spores at 120c

Question 5

What are the main reasons for canned food spoilage?

Answer 5

1. Under processing
2. Leakage