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

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

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Milk and Milk Products
The acidity may be described as "aromatic" when

All of these
appreciable amounts of volatile fatty acids are produced by Coliform bacteria
Lactic streptococci and aroma forming Leuconostoc species are growing together
Streptococcus lactis and other lactis are growing together

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

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

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