How long a pasteurized cheese will keep without refrigeration will depend on the type of cheese. Hard cheeses will last longer than soft cheeses. However, all cheese will begin to dry out without refrigeration. It is best to keep them refrigerated. You can keep them out for an hour or so, but after that back into the refrigerator.
Pasteurized milk should be cooled immediately after pasteurization, and kept cool. There is a best before date on all milk that is refrigerated, and it must be used up before that time, or else the milk will turn sour.
It should keep for at least a week ! I have just thrown out the remains of a 2 litre carton I bought on the 1st of January - I only disposed of it because I bought some fresh yesterday (14th) The milk I threw out was still drinkable !
That tends to depend upon the bacterial quality of the milk, processing-shipping-storage history, and the temperature of your refrigerator. The colder the milk, the longer it will keep. Shelf life could be anywhere from 10 to 20 days. Once opened, it should be used as quickly as possible.
refrigerate 1°C to 4°C
As long as you keep it dry, powdered milk lasts forever. Pasteurized will spoil.
There is lots of bacteria in milk. If the milk is not pasteurized or refrigerated immediately, the warmer environment the milk is subjected to encourages growth of these bacteria. This boost in growth is how you get spoiled milk.
Once opened...yes.
Yes, all milk that you purchase from stores are pasteurized.
Raw milk, or, milk that has not been pasteurized.
Milk can be unsafe for humans to drink as it can make them sick. Therefore, milk is pasteurized so that it is safe and healthy for human consumption.
Milk that has been pasteurized is what is referred as the healthy milk.
To prevent cream (as in cream from milk) from causing foodborne illness, the cream should be pasteurized, stored refrigerated and used before it spoils. Most products using cream as an ingredient should probably be refrigerated, too.
That is an incorrect postulation. Pasteurized milk is not sterile. It still contains microorganisms. But if you are referring to shelf stable aseptic pack, that product has undergone Ultra High Temperature pasteurization and was packaged in a sterile environment. Packaging has improved over the years, but even that packaging doesn't keep the milk forever. See Related Links.
Pasteurized Goat Milk
Louis Pasteur.
What kind of warm? Some people say that heated warm milk helps them fall asleep. If you left the milk out too long, then it could become sour and possibly make you sick. Usually if it smells and tastes okay, it is fine. However, warm milk will not last as long as that that has been kept refrigerated.