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The milk gets infected with bacteria present in the environment, some of which produce acids and other compounds as a byproduct of their digestive process when they consume compounds present in the milk. That's what gives it the sour taste and sometimes rank smell.
If you inoculate it with the right strain of bacteria, lactobacillus acidophilus being one, you get yogurt. L. acidophilus consumes lactose, a sugar in the milk, and produces lactic acid that gives yogurt its tangy flavour.
What else can I help you with?
Is raw milk supposed to smell sour?
Yes, if it has soured. Fresh raw milk does not smell sour. Soured raw milk is fine to use though.
What are the examples of sour smell?
Sour milk or any food that has gone bad.
What does the smell of rotten milk resemble?
The smell of rotten milk is often described as sour, pungent, and unpleasant, similar to the scent of spoiled food or a strong, sour odor.
What does sour milk smell like and how can you tell if milk has gone bad?
Sour milk has a strong, unpleasant odor that is often described as tangy or sour. To tell if milk has gone bad, you can check for changes in texture, color, and smell. If the milk looks clumpy, has a yellowish tint, or smells off, it is likely spoiled and should not be consumed.
Why do you smell like sour milk?
Smells like a hygiene issue.
What are the examples of smell?
Sour milk or any food that has gone bad.
What could be causing the unpleasant smell of sour milk in my refrigerator?
The unpleasant smell of sour milk in your refrigerator could be caused by spilled or expired milk that has gone bad. It is important to clean out any spilled milk and check for expired items to eliminate the odor.
What smells sweet but tastes sour?
Rotten fruit or spoiled milk can have a sweet smell but taste sour when consumed.
milk tuning sour is an chemical change?
Yes, milk turning sour is a chemical change. This is because the bacteria present in the milk ferment the lactose sugars, producing lactic acid which changes the chemical composition of the milk, resulting in the sour taste and smell.
How do I get rid of sour milk smell in a child's backpack?
Buy a new backpack
Is milk turning sour a physical or chemical change?
Milk turning sour is a chemical change. It occurs due to the fermentation of milk sugars by bacteria, leading to the production of lactic acid, which changes the taste and smell of the milk.
What does curdled milk look like and how can you tell if it has gone bad?
Curdled milk looks lumpy and may have a sour smell. You can tell if milk has gone bad by checking for clumps, a sour taste, or a bad odor.
