Today, packaging metaphysics occupies a very high position in our lives. With the increasing application of small packaging and the rise of the mall, its application scope will be wider, and some will replace hard packaging more and more. The prospect will be Very promising, so we need to explore further. Today, we will define the meaning of packaging principles such as needle leads, vacuum packaging machines, the meaning and use of public law. The key to vacuum packaging is:
1. Deoxidation helps prevent food spoilage, and its principle is relatively simple. Because food spoilage is mainly caused by the activities of microorganisms, most microorganisms (such as molds and yeasts) need oxygen to survive, and vacuum packaging uses this principle to remove oxygen from packaging bags and food cells. Experiments that make microorganisms lose their "living environment" prove that when the oxygen concentration in the bag is less than 1%, the growth and reproduction rate of the microorganisms will drop sharply. When the oxygen concentration is less than 0.5%, most microorganisms will be inhibited and stop breeding. In addition to inhibiting the growth and reproduction of microorganisms, vacuum oxygen can also inhibit the growth and reproduction of microorganisms.
2. Prevent food oxidation, because fat foods contain a large amount of unsaturated fatty acids, which are oxidized by oxygen, which deteriorates the flavor of food. Otherwise, oxidation will also lead to the death of nicotinic acid A and C, and unpleasant substances in food pigments will also be affected by oxygen, which will cause the pigments to darken. Therefore, it can also effectively prevent food spoilage and maintain its color, aroma, taste and nutritional value.