A PACKAGING MATERIAL WHICH REMOVES OXYGEN FROM A PACKAGE AND A METHOD OF PRODUCING THE MATERIAL

摘要

The invention relates to a packaging material comprising a layer which removes oxygen from a package by an enzyme reaction. This packaging material comprises preferably a layer which will be on the outside of the package and is substantially impermeable to gas, and a layer which will be on the inside of the package and is permeable to gas but impermeable to liquid, and a layer therebetween containing an oxygen removing enzyme, such as glucose oxidase, dissolved in a liquid phase, a substrate of said enzyme and optionally an insoluble filler. The invention relates further to a method of producing a packaging material of this kind, whereby a composition containing an oxygen removing enzyme is applied on a plastic film and said film is laminated together with another plastic film in such a manner that the layer containing the oxygen removing enzyme is sandwiched between the plastic films.