Best Answer

Some, but not all. Freezing may kill some of the present forms of bacteria. But for the most part, bacteria may simply freeze the growth state and then continue to grow once food has been thawed. A perfect and well known example of bacteria that cannot be killed through freezing is Salmonella.

To avoid getting sick, your best bet is to properly thaw and cook the meat before you eat it. Like any living population (ex. humans , ants , bees) a natural catastrophe produces a large number of deaths. But the effects are rarely "complete" , meaning that total annihilation is a bit of an impossibility.

The bacteria in your food belong to two criteria -

a) the "wanted" bacteria

b) the "unwanted" bacteria

However they both are bacteria - so the effect of the freezing will be proportionally same on both types. For the bacterial population (in your food) the freezing is a natural catastrophe ! A lot of them may get annihilated because of the severe shear pressures generated by water crystal formation.(Remember ice floats and therefore has more volume than water - for the same mass).

Some bacteria ( unwanted as well as wanted) will survive. That is because their "population" inside is quite huge to begin with. But they will find the going really tough - until the food is thawed ! But once thawed they will multiply quickly to recover populations. In fact this new generation ( according to Charles Darwin) will have more "freeze-hardy" bacteria among them !

Bacteria have been known to grow in extremely hostile conditions elsewhere on earth. Your frozen food hardly nears the "extreme" conditions they are known to survive in.

User Avatar

Wiki User

โˆ™ 2008-12-31 06:27:14
This answer is:
User Avatar
Study guides


20 cards

Which germ layer is destined to become the inner lining of body organs

What factor allows organisms such as planarian worms and plants to regenerate new individuals from fragments of parent organisms

What kind of bacterium cannot tolerate oxygen

In what cycle of viral replication does the virus destroy the host cell

See all cards
5 Reviews

Add your answer:

Earn +20 pts
Q: Does freezing food kill unwanted bacteria?
Write your answer...
Related questions

Will Refrigerating or freezing foods will kill any bacteria present in the food?


What happens to all bacteria in frozen food?

Food that is frozen still has bacteria on it, freezing slows down the bacteria that spoils food but does not stop or kill other dangerous bacteria, it actual preserves it. Only evenly heating the food will kill bacteria.

How do you kill e coli?

The best way to kill E. coli is to heat food to an appropriate temperature, and always wash hands. Freezing tainted food will not kill the bacteria.

Can bacteria survive being frozen?

Yes, bacteria can survive freezing temperatures. Freezing isn't a sure-fire way to kill the bacterial population in the food. The only thing freezing will do is halt the multiplication of bacteria however thawing will resume the process.

If a food spoiled and then was placed in the freezer would it kill bacteria?

Freezing doesn't necessarily kill bacteria. It stops them from multiplying, but they can revive when the food is thawed. And the toxins they produced before being frozen will still be there.

Does uv rays affect food?

No. Uv (ultraviolet radiation) rays are used on food to kill unwanted bacteria withoud harmful chemicals.

Does freezing kill salmonella bacteria?

No, it doesn't kill much of the bacteria at all and the bacteria remaining will grow during defrosting.

Will Refrigerating or freezing foods kill any bacteria that is currently in the food?

No, probably not. Cooking them will. Like meat or something.

Will freezing kill most bacteria?

It will kill some, maybe not most (there could be millions of kinds of bacteria).

Does freezing kill pneumonia bacteria?

Freezing does kill the bacteria because it freezes the cell movement. Bacteria has to maintain in movement to stay alive. Also when it freezes, it shatters easily. This kills the bacteria almost immediately.

Does freezing meat kill bacteria in it?

Freezing can damage bacterial cells, but it won't kill them all off. The bacteria can recover and start to grow again once the meat is thawed.

How does tinning food kill bacteria?

Food is cooked to kill bacteria as it is canned; the cans then keep out any new bacteria.

How do you kill parasites in food?

By freezing or boiling it.

What cells in your body kill unwanted bacteria and viruses?

White blood cells and antibodies

Use of heat to kill bacteria in food and beverages?

The use of heat to kill bacteria in food and beverages is pasteurisation

What temperature does bacteria thrive in food tech?

Any temperature less than around 60 °C for most bacteria. However, there are bacteria in food that can survive past 100 °C. Freezing does not significantly kill bacteria, but puts it into a dormant stage, where they can no longer thrive and reproduce.

How do you kill bacteria in food?

Boil it.

What waves are used to kill harmful bacteria?

ultraviolet waves kill bacteria on food

Why is the refrigerator freezing your food?

because when food is refrigerated it prevents bacteria from growing on your food, bacteria that can harm you, or kill you! Sometimes your refrigerators temperature may vary. This is likely due to the amount of food inside. If the refrigerator is freezing your food it is too cold. Adjust the refrigerator's thermostat to a lower numeric setting on the control so that the temperature is steady at 38 degrees.

What process is named after Louis Pasteur?

Pasteurization is the process of heating (foodstuffs) to kill unwanted bacteria.

What is the purpose of having fever?

Your body heats up to try to kill off unwanted bacteria and viruses.

Will heating food with bacteria kill bacteria?

Yes, heat denatures the proteins that make up bacteria. However, it won't kill all bacteria.

Does fruit essence kill bacteria?

Normally fruit essence is a food for bacteria. Acidic fruit, such as citrus, or vinegars, can kill some bacteria.

Does freezing yogurt kill the live cultures?

According to a quick sarch of the web, freezing doesn't kill all the good bacteria in yogurt. According to my gut, it kills enough that it can't be eaten without supplementing the bacteria if one is lactose intolerant.

How can bacteria on food be kill?

Since temperature is one requirement fo grow,then extreem temperatures can be used to kill bacteria on the food depending on the type of bacteria and it's optimal temperature. So by boiling/heating of food.