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Freezing bacterial cultures slows the death rate of the bacteria. When bacteria is frozen it goes into a sleep state and does not grow or multiply.
There are several things that bacteria need to grow at an optimal rate. The most essential factors include moisture, food, warmth and time.
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No, bacteria do not grow on fat
There are a few different temperatures that allow you to grow bacteria. Warm temperatures tend to grow bacteria rather well.
The growth of bacteria slows but does not stop. The food will still spoil but at a much slower rate.
yes
bacteria cells grow at a high speed rate.
Freezing bacterial cultures slows the death rate of the bacteria. When bacteria is frozen it goes into a sleep state and does not grow or multiply.
Eventually bacteria will grow and cause it to spoil.
Simply, fermentation happens.Milk contains bacteria. When the milk is not refrigerated, the bacteria are very happy and their populations grow. The metabolism of the bacteria lowers the pH of the milk, thus souring it. This will eventually happen to fresh milk that is refrigerated, too. The cold only slows the growth and does not stop it.
There are several things that bacteria need to grow at an optimal rate. The most essential factors include moisture, food, warmth and time.
Most of the bacteria in the refrigerator will have slow growth or stop grow but it will not kill most bacteria. Spoilage bacteria thrive in refrigerator temperatures so the food will still get spoiled and some bacteria even thrive in the freezer.
Because they can grow at refrigerator temperatures, and cause food spoilage.
Cooking kills bacteria but not the toxins the bacteria made while growing. Refrigeration does prevent most bacteria but not listeria which can grow in a refrigerator. Botulism is a toxin that does not go away with boiling or cooking.
The FDA says on their website to keep the refrigerator set below forty degrees Fahrenheit. "Keeping the refrigerator at 40°F or below is important because - unlike most foodborne bacteria - Listeria will grow in the refrigerator, and it will grow faster at refrigerator temperatures above 40°F. And, the longer ready-to-eat, refrigerated foods are stored in the refrigerator, the more time Listeria has to grow. Finally, Listeria can spread from one food to another through spills in the refrigerator. That's why keeping the refrigerator clean is also important!"
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