Milk and Milk Products
Swelling of the can is caused primarily by

none of these
gas forming, aerobic spore formers
gas forming, anaerobic spore formers
both (a) and (b)

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Milk and Milk Products
Non bacterial ropiness or sliminess in milk and milk products may be due to the

sliminess resulting from the thickness of the cream
stringiness due to thin films of casein or lactalbumin during cooling
All of these
stringiness caused by mastitis and in particular by fibrin and leucocytes from the cow's blood.

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