Nitrogen is an inert gas, which is neutral in the process of its contact with food, so it is widely used in the field of food preservation. Food contact with air is easy to oxidize. The oxidation of food not only leads to the decrease of food taste, but more importantly, it will lead to the decay of food. Effective anti-corrosion measures have always been a prominent point in the food industry. The following pressure swing adsorption nitrogen production device manufacturer Suzhou Jiarui gas system provides some nitrogen knowledge for everyone.
Nitrogen effectively reduces dissolved oxygen ( DO ) in the production of beer, slows down the deterioration of beer, prolongs the storage period of beer, and does not destroy the aromatic substances in beer, which greatly improves the quality of beer. In terms of food packaging, due to the stable nature of nitrogen, nitrogen is generally used to repel oxygen, thus slowing down the oxidation and respiration of food. At the same time, nitrogen also plays a certain role in preventing bacterial growth.
In dry foods ( such as milk powder, coffee, pine nuts, peanuts, etc. ), there is almost no water inside. Generally, microorganisms cannot reproduce and grow. The shelf life of food only depends on the oxidation of food. Vacuum nitrogen filling method is used to reduce the oxygen content to 1 %, which can effectively prevent the oxidation of food. In the modified atmosphere packaging of slightly wet foods ( barbecue, snacks, etc. ) and high-humidity foods ( fish, fruits and vegetables, etc. ), it is necessary to prevent food from mildew while preventing food oxidation. Therefore, CO2 is generally used to stop.
The above is the nitrogen-related knowledge of Suzhou Jiarui gas system, a manufacturer of pressure swing adsorption nitrogen production device, for everyone, hoping to help everyone.
