| The antioxidant, {dollar}alpha{dollar}-tocopherol (ATP) was incorporated into a coextruded laminate film consisting of a heat seal layer, a core layer of high density polyethylene (HDPE) impregnated with ATP, and an outer HDPE layer. The rate of loss of the antioxidant from the laminate film was determined as a function of time and temperature and was found to follow a first order rate expression, with an activation eneygy of 28.87 kcal/mole.; The effectiveness of ATP and BHT impregnated laminate films to retard the oxidation of a packaged oat cereal product was also evaluated. The extent of oxidation was based on the level of hexanal in the product. Product packaged in pouches containing no antioxidant exhibited a significantly high level of lipid oxidation, as compared to the product packaged in the antioxidant impregnated laminate structures. Both antioxidants appeared to provide a similar level of effectiveness, in terms of retarding product oxidation. |
