Help you choose a composite modified atmosphere packaging machine

The composite modified atmosphere fresh-keeping packaging machine is a new type of fresh-keeping packaging equipment developed on the basis of a vacuum packaging machine and a nitrogen-filled packaging machine. Its greatest feature is that it solves the problem that the taste of food after vacuum packaging plus high-temperature sterilization is greatly destroyed and the investment in nitrogen-filled packaging is relatively large. It can ensure the original taste and taste of food and ensure the original juice, original taste and original appearance of food. .

Technical principle of compound modified atmosphere fresh-keeping packaging machine

The principle of the composite modified atmosphere packaging machine is to use 2 to 4 kinds of composite preservative gas mixed according to the characteristics of food products to replace the air inside the packaging box (bag) and change the external environment of the food in the box (bag) to achieve suppression. The effect of the growth of bacteria (microorganisms) slows down the metabolism of fresh fruits and vegetables, thereby prolonging the shelf life of foods. Atmosphere-preserved gas is generally composed of carbon dioxide (CO2), nitrogen (N2), oxygen O2, and a small amount of specialty gases. CO2 has the effect of inhibiting the growth and reproduction of most spoilage bacteria and molds, and is the main bacteriostatic agent in protective gases; O2 has the ability to inhibit the growth and reproduction of most anaerobic spoilage bacteria, maintain the color of fresh meat and maintain the aerobic respiration of fresh fruits and vegetables. The role of freshness; N2 is an inert gas, and food does not work, used as a filling gas, and the combination of CO2, O2 and specialty gas composition of fresh gas, and different food and vegetable, fresh gas composition and proportion of different.

How to choose composite modified atmosphere packaging machine

(1) The core technology of modified atmosphere packaging machine is high precision gas automatic mixing technology. If there is no such core technology and corresponding testing equipment, the modified atmosphere packaging machine is a "pseudo compound modified atmosphere packaging machine." If users purchase such products, they will certainly bring economic losses to the company. The essence of this technology is to use compound and preserving composite fresh gas according to different food characteristics. For example, the preservation of broccoli, the gas mixture ratio of O2 4% ~ 5%, CO2 1% ~ 2%, N2 95% ~ 97%. If the O2 content is low, it will cause anaerobic respiration and necrosis, while the high O2 content cannot inhibit the respiration rate and affect the preservation period. In addition, if the CO2 is higher than its damage concentration, it will accelerate the deterioration of broccoli.

(2) Composite modified atmosphere fresh-keeping is an integrated technology with multiple links and multiple fields. Therefore, the manufacture of the composite modified atmosphere packaging machine must be a rich and comprehensive study of the characteristics of food and vegetables, pretreatment process, food processing environment, equipment combination, packaging materials and operating procedures. When users purchase composite gas fresh-keeping packaging machines, they must also require equipment manufacturers to provide a full set of technical support, so that users can purchase qualified equipment and ensure that their products reach the preservation effect.