Do canned foods require preservatives
Time of publication:
2023-08-18
Canned food is a very delicious food, and many people love to eat it. Most of the canned foods we eat are usually canned fruits or canned meat. These two types of canned foods have a good taste and are usually made in the pickling process. In order to keep the canned food for a longer period of time, some substances that can increase its shelf life are added inside. Will there be any preservatives in the canned food? Many people feel that canned food can be stored for such a long time because there must be preservatives, but in fact, there are no preservatives in canned food. The spoilage of food is mainly caused by microorganisms under appropriate conditions. To prevent microbial growth, various measures can be taken for control, such as canned storage. Canned food is preserved by sealing it first, then heating and sterilizing it, completely killing microorganisms in the food. After a certain period of high-temperature heating, the microorganisms in the canned food are eliminated; At the same time, because it is already sealed, microorganisms in the environment cannot enter the can. Due to the control of microorganisms, canned food can be stored for a long time. "Ultra high temperature heating followed by sterile packaging" is another commonly used solution for long-term preservation of food in the food industry. Its principle is similar to canned food, which is to kill microorganisms by ultra-high temperature heating, and then sterile packaging is carried out in a sterile environment to prevent microorganisms from entering, thereby achieving anti-corrosion without the need for preservatives.
Canned food is a very delicious food, and many people love to eat it. Most of the canned foods we eat are usually canned fruits or canned meat. These two types of canned foods have a good taste and are usually made in the pickling process. In order to keep the canned food for a longer period of time, some substances that can increase its shelf life are added inside. Will there be any preservatives in the canned food?
Many people feel that canned food can be stored for such a long time because there must be preservatives, but in fact, there are no preservatives in canned food.
The spoilage of food is mainly caused by microorganisms under appropriate conditions. To prevent microbial growth, various measures can be taken for control, such as canned storage.
Canned food is preserved by sealing it first, then heating and sterilizing it, completely killing microorganisms in the food. After a certain period of high-temperature heating, the microorganisms in the canned food are eliminated; At the same time, because it is already sealed, microorganisms in the environment cannot enter the can. Due to the control of microorganisms, canned food can be stored for a long time.
"Ultra high temperature heating followed by sterile packaging" is another commonly used solution for long-term preservation of food in the food industry. Its principle is similar to canned food, which is to kill microorganisms by ultra-high temperature heating, and then sterile packaging is carried out in a sterile environment to prevent microorganisms from entering, thereby achieving anti-corrosion without the need for preservatives.
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