E949: Hydrogen
Main role: food process gas
Also listed as: H2, hydrogen gas
What is E949 (Hydrogen)?
Hydrogen is a gas listed for specified food applications. Its technical use belongs to controlled manufacturing or gas systems rather than a general nutritional claim about hydrogen-containing foods.
What does it do in food?
Its main role is food process gas. Gas mixtures are chosen for a particular product and package. A protective atmosphere supports a storage system; it does not replace temperature control, hygiene, or the instructions printed on the pack.
Food and formulation examples
- Specified food gas applications
- Controlled processing mixtures
These examples describe formulation roles, not a list of unrestricted legal uses. Availability and permitted applications differ by country and food category.
Label names and ingredient questions
Look for E949, E 949, or the ingredient name. Related names and label terms include H2, hydrogen gas. A family code can cover more than one specified form; check the full declaration when the distinction matters.
The presence of a permitted gas does not establish a health benefit for hydrogen-marketed drinks. Any benefit claim needs separate evidence about the actual product and exposure.
Is E949 safe?
There is no meaningful personal risk estimate from an E number alone. Food-grade specifications, allowed uses, amount consumed, and individual circumstances all matter. The authorization record below gives the legal scope; it is not a claim that every possible use is appropriate.
A label identifies the ingredient but usually not its concentration. Calculating daily intake requires the amount in the food and the quantities eaten.
Authorization and conditions of use
The Great Britain food additive register lists E949 as Hydrogen. This is an entry subject to its stated conditions, not unrestricted permission for every food. The record links to the applicable authorization terms. For an EU product, use the European Commission food additive database to check the relevant food category and limits. Other countries may use different names or rules.