The main gases used in Modified Atmosphere Packaging (MAP) applications are carbon dioxide, nitrogen and oxygen. These gases are used either alone or in combination. The gas properties and the interaction of gases with the food ingredients, e.g., solubility in the foodstuff, should be taken into account when choosing the gas or gas composition.
We supply food grade carbon dioxide (CO2), nitrogen (N2), and oxygen (O2) along with other gases authorized for foodstuffs as individual gases in cylinders under high pressure as well as liquids in insulated tanks for subsequent mixing at the packaging machine and premixed.
Nitrogen and oxygen are separated from atmospheric air. Carbon dioxide is taken from natural wells or captured as a by-product of fermentation processes (wine, beer) or ammonia production. For example, sometimes it may be more effective and practical to produce nitrogen on-site using pressure swing absorption (PSA) or a permeable membrane plant.