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food preservatives are chemicals that kill or stop bacteria from growing. if the evironment is unfit for bacteria to grow it cant survive there. to do this the environment needs to be changed which can be through a number of things. salt and sugar concentrations effect the chemicle envirenment as does factors such as pH levels. preservatives are added to create an environment that is unsuitable for bacteria. for example, if a certain bacteria cant survive in high acidity, an acid high in pH levels will be added to kill or stop that bacteria from growing

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9y ago
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12y ago

Depends on what kind of canned food... Anything high in fat and protein can grow botulism if even the tiniest amount of air is let in somehow... Rather than taking a chance, they put preservatives in to make certain that doesn't happen.

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9y ago

Chemical preservatives help stop food from spoiling by keeping bacteria and molds from growing. Sulfur dioxide is one of those chemicals and it also helps to slow oxidation of fats.

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11y ago

to keep it fresh longer than its made to be

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Q: Why are food preservatives used in foods?
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Related questions

Why are preservatives used in foods?

preservatives are used in foods to keep the food from spoiling in a short period of time


Which foods contain sodium benzoate and potassium sorbate?

Sodium benzoate and potassium sorbate are food preservatives. Most foods that are processed have these or other preservatives. If you are concerned check labels on you foods. Almost any food that has a label has preservatives.


What are the common additives and preservatives used in food?

additvisand preservatives used food preparation


Do foods containing preservatives really stay fresh longer than foods without them?

Preservatives in food is actually harmful for humans because they contain chemicals that are harmful. It is true that foods with preservatives stay fresher but on the other hand the foods that are natural without preservatives are healthier! I hope this answer helped you!! :)


What are common additives and preservatives used in food preparation?

additvisand preservatives used food preparation


What are the common additives and preservatives used in food preparation?

additvisand preservatives used food preparation


Are any preservatives prohibited for kosher foods?

Yes, there are food preservatives that are deemed non-kosher as they are derived from non-kosher animals or foods. Other preservatives may be deemed non-kosher if they are combined with certain foods, lactic acid being such an example. This is why it is especially important to check for valid hechshers on processed foods.


What are the common additives and preservatives in food preparation?

additvisand preservatives used food preparation


What are the common additives and preservatives used in preparation?

additvisand preservatives used food preparation


How do you food presrvatives added in food?

Preservatives preserve food to keep from spoiling such as aspartame is a popular preservative You answered your own question. The root word of preservatives is preserve. If you look up the definition of preserve, then you have your answer. I recommend brushing up on your vocabulary as it can be very beneficial to you in many ways.


What is the benefits with using acids in food product?

Acids are added in foods for taste and as preservatives.


Why does organic food have a short expiration date?

It does not contain preservatives, meaning that preservatives keep foods un-spoiled for a long time, so it is long lasting. Without the preservatives, it can be spoiled very quickly in a matter of time.