A VIEW ON THE MODELLING OF THE LOSS OF SHELF-LIFE OF THE PRODUCTS PACKAGED IN MODIFIED ATMOSPHERE (MAP)

The purpose of the author's own research was to propose a model which would allow to estimate the probability of the loss of shelf-life in MAP packaged products, as a function of separated forecasting factors including: input quality level, type of packaging and the input mix of gases in the packaging. For that purpose, the Cox proportional hazard model used in the analysis of survivals was applied. The examined material consisted of salted peanuts packaged in a mix of gases in bags of metalized laminate and in metal cans, with a changing original content of oxygen in the packaging. The loss of shelf-life model thus constructed can be used to estimate the loss of durability of products packaged in modified atmosphere model, taking at the same time into account all the tested criteria.