Nitrogen Gas (Modified Atmosphere Packaging) — Hidden Processing Agent — Is It Vegan?
Also known as: MAP gas, Food-grade nitrogen, N₂, Protective atmosphere
Vegan
No animals or animal-derived substances are involved in producing this agent.
Not required on labels
MAP packaging sometimes states 'packed in a protective atmosphere' on labels but the specific gas is rarely listed.
Source
Extracted from the atmosphere by cryogenic separation or pressure swing adsorption. Entirely inorganic.
Used In
Modified atmosphere packaging for snack foods, salads, nuts, and fresh produce (replaces oxygen to prevent oxidation and bacterial growth), wine bottle blanketing, beer dispensing (nitrogen-infused beers like Guinness), coffee packaging.
How to Avoid
No need to avoid — nitrogen is vegan.
Editorial Notes
Nitrogen-infused beer (nitro beer) uses a nitrogen-CO2 mix to produce smaller bubbles and a creamier mouthfeel. Guinness Draft cans contain a plastic 'widget' that releases nitrogen when the can is opened, recreating the draught experience. Entirely vegan.