How many days can the food shelf life be extended after being packed by vacuum packaging machine?

Vacuum packaging of food everywhere, but when it comes to the vacuum packaging machine, for many consumers are new, and after the vacuum packaging of food is so popular, in addition to convenience can realize open bags of instant, the key point is easy to store, and after the vacuum packing food shelf life is determined through which a few respects? Can the function of extending shelf life be realized only by vacuum packing machine? How much do you know about the mystery? Here is a popular science for you.

To extend the shelf life of food, only rely on the vacuum packing machine for food packaging is not enough, we from the working principle of vacuum packaging machine can know, its main function is oxygen, use the materials in the food packaging with better barrier property, and then extract to certain vacuum, to prolong the shelf life, However, it should be noted that vacuum packaging can only prevent the growth and oxidation reaction of some microorganisms, and most microorganisms cannot be removed. And the main determinant of food shelf life has to rely on other methods to assist processing. Specific methods are as follows.

First, high temperature cooking method

After vacuum packaging of food, unified into a high temperature pressure cooker for disinfection treatment, the general use of 121 degrees high temperature sterilization, can achieve a relatively long shelf life, shelf life can generally reach more than 6 months, the specific will be different because of different product characteristics. Such as marinated meat, marinated eggs, sausage, ham, corn, zongzi and other foods are more suitable for this high-temperature cooking method to achieve the purpose of extending the shelf life of food.

Two, air lock fresh method

Not all foods are suitable for high temperature cooking method to eliminate viruses, such as fresh food, so how to extend the shelf life of this kind of food? For this type of food shelf life extension, you need to consider to extend the shelf life, will be apparent effects on the food, on the market at present raw foods common kind of an extended guarantee period method is fresh air lock packing, the fresh air lock packaging is equipped with the function of gas, the basis of the vacuum operation method is to take out the air in the box, Then according to the requirements of the food material filled with a certain proportion of mixed gas, by changing the gas environment to prevent microbial reproduction, so as to extend the shelf life of the food. This kind of fresh air lock packaging can not only achieve the purpose of extending the shelf life of food, can keep the color of green vegetables and fresh meat will not change. But this kind of fresh air lock food shelf life can not reach the high temperature cooking method so long time, such as cold meat products after the fresh air lock packaging, in 0-4 degrees environment can be stored for 7-10 days or so.

Three, pasteurization method

Pasteur was invented by The Frenchman Pasteur in 1865, and Pasteur is also named after this method. This kind of disinfection method is more used in the milk industry, and more used in the food industry, such as pickles. Its sterilization temperature is controlled between 63-85 degrees, if the temperature is too high, it will destroy its nutrients.

Have seen the introduction of the above, I believe you for food shelf life problem should have a more in-depth understanding, high temperature cooking method can achieve a long shelf life, but the disadvantages is through the high temperature will cause certain influence to the taste of food, fresh air lock method can realize to lock the fresh taste of food, but some shelf life is relatively short, of course, In the food shelf life on some businesses will also join a certain proportion of preservatives to achieve the purpose of extending the food shelf life, and the specific choice of which method to extend the food shelf life, this has to be based on the food processing requirements for the corresponding choice!