lab 20: Food microbio: yogurt Flashcards
1
Q
What are 3 foods that are produced through lactic acid fermentation?
A
Kimchi, yogurt, sourdough bread
2
Q
How are microbial fermentations used to preserve food?
A
You make lactic acid which lowers pH and denatures protein
3
Q
What is the method of action for salt-curing ham?
A
Osmotic pressure (creating a hypertonic environment)
4
Q
What is the method of action for canning fruit in a pressure cooker?
A
Heating under pressure (protein denaturation)
5
Q
What is the method of action for freezing vegetables?
A
ice crystals disrupt cellular structure; bactericidal
