Nitrogen Gas (Modified Atmosphere Packaging) — Hidden Processing Agent — Is It Vegan?

Vegan status: Vegan

Also known as: MAP gas, Food-grade nitrogen, N₂, Protective atmosphere

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.

Appears on label: No. MAP packaging sometimes states 'packed in a protective atmosphere' on labels but the specific gas is rarely listed.

How to avoid

No need to avoid — nitrogen is vegan.

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.