What is packing with modified atmosphere method?
Everyone knows that food doesn’t always stay fresh. The milk turns sour, the bread is moldy, the meat is brown and smells. Many factors cause food spoilage. Oxygen in the air can produce a process of failure called oxidation. For example, fats and oils in foods can oxidize and spoil.

One of the main reasons for the deterioration of food products is the growth of microbes such as bacteria, yeasts and molds. These microbes feed and grow on food and make it deteriorate.

The appearance of food products can change over time due to exposure to air. For example, fresh red meat turns brown after a while due to the chemical interaction between oxygen and pigments in its tissue.

There are different ways to slow down these spoilable processes and keep food products safe from these destructive things, one of which can be refrigerator storage, because the lower the temperature, the lower the rate of growth of germs, and other methods can be used to keep together with acid, the process of cooking with salt, or adding chemical preservatives can be noticed.

However, keeping food fresh as much as possible without adding additives is now considered a major challenge. sealing a film on its opening is one of the most important technologies for achieving this goal and also packaging with a mixture of natural gases with precisely controlled ratios, can significantly slow down the perishability rate by inhibiting the oxidation process and the growth of microbes.

In order to pack a product with modified atmosphere method, advanced machinery is needed to send air out of the package and instead replace it with a precise gas compound and finally by sealing a film on the opening of the container we can only put our gas compound with the product inside the package and also prevent other gases in it.

 

The accuracy of the MAP method using Tray sealer devices

Currently, several prestigious government university centers under the support of West Asia Steel are using the machines of this company for free in their laboratory environment and are engaged in research. Our goal is to obtain valuable information from the mentioned tests and provide this information for free to manufacturers.

In the research conducted in 2018 by the professors of Bu-Ali Sina University in Hamedan- IRAN on the subject of “estimating the effect of chitosan solution, packaging with nano method and modified atmosphere method on the physical, chemical and mechanical characteristics of button mushroom during its storage” with the semi-automatic device of West Asia Steel Company was used. It brought important achievements in the field of precision implementation of the modified atmosphere method using our devices.

In this research, mushrooms that were impregnated with chitosan solution and mushrooms that were not impregnated were tested in three types of normal packaging, packaging using nano films and packaging with nano films along with the modified atmosphere method. Packages were prepared with certain percentages of gases and nano films (a capsule containing oxygen and carbon dioxide was prepared). The packages were packed in dimensions of 7*15*20 cm using a semi-automatic seal vacuum machine. Oxygen and carbon dioxide were measured every two days for ten days by a gas measuring device.

The use of nano film (due to less access to oxygen and carbon dioxide) along with the modified atmosphere method had a positive effect on the control of the mushroom respiration rate and the physical, chemical and mechanical characteristics of this product and increased the shelf life of the mushroom and preserved its characteristics.

Due to the fact that this research has been published in prestigious journals and has an ISI rating, extreme care must be taken in the conditions of the test and the materials used, and the use of high-quality and high-precision devices should be observed in this research according to the results obtained. It is possible to understand the accuracy of our machines in the implementation of the MAP method.