DESCRIZIONE
A method for packaging a product (3), in particular a food product, under a protective atmosphere, of the type in which: - the product is positioned in a package; a protective atmosphere is introduced into the package; the packaging (4) is sealed; characterized in that the protective atmosphere is a bio-preservation atmosphere obtained in the following way: a composition (1) comprising a composition (1) comprising a gas or gas mixture intended to constitute the atmosphere to be sealed in the package is introduced a bioactive substance or mixture of bioactive substances chosen.