Carbon dioxide (CO2) is well known for its role in carbonating sodas, beers and other fizzy drinks. Beverage-grade CO2 offers a specific purity to ensure safe consumption. However, carbon dioxide plays a much larger role in food and beverage production.
This gas is often used in Modified Atmosphere Packaging (MAP) — a process where other gases are introduced to packages for preservation. CO2 is often used for packaging hard cheeses to reduce microbial growth and retain the products’ texture. Carbon dioxide is also used in smaller percentages for packaging soft cheeses.
In food chilling and freezing applications, CO2 snow, or dry ice, is an effective cooling medium for various products, including dairy, baked goods, seafood, produce and meat. Dry ice is also used for in-transit refrigeration to control the trailer’s temperatures and prevent soiled products.