How is canned food preserved?
Time of publication:
2023-08-18
In fact, most canned foods are non additive, let alone added preservatives. Only a few canned foods, due to factors such as limited craftsmanship, will be added with standard range preservatives, which are not harmful to the human body. Generally speaking, when making canned food, it is necessary to preprocess its raw materials. Next, a series of processes including canning, exhaust, sealing, sterilization, cooling, insulation inspection, packaging, etc. are completed. This is the manufacturing process and technique of canned food, and it is precisely this special manufacturing technique that ensures the "no additives" of canned food. In addition, canned food is mainly pasteurized and completed after canning. Generally speaking, pasteurization can kill the vast majority of microorganisms in food. At the same time, the packaging of canned food is also very particular, using tin sheets and other materials to ensure its good sealing. This also prevents food from producing microorganisms again. Therefore, canned food can still ensure a long shelf life even without adding preservatives.
In fact, most canned foods are non additive, let alone added preservatives. Only a few canned foods, due to factors such as limited craftsmanship, will be added with standard range preservatives, which are not harmful to the human body. Generally speaking, when making canned food, it is necessary to preprocess its raw materials. Next, a series of processes including canning, exhaust, sealing, sterilization, cooling, insulation inspection, packaging, etc. are completed. This is the manufacturing process and technique of canned food, and it is precisely this special manufacturing technique that ensures the "no additives" of canned food.
In addition, canned food is mainly pasteurized and completed after canning. Generally speaking, pasteurization can kill the vast majority of microorganisms in food. At the same time, the packaging of canned food is also very particular, using tin sheets and other materials to ensure its good sealing. This also prevents food from producing microorganisms again. Therefore, canned food can still ensure a long shelf life even without adding preservatives.
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