When deciding on the important aspects of introducing a food product to market
competition, knowledge of its shelf-life and, in particular, the dependence of
quality loss on temperature conditions is essential (Fu and Labuza, 1993). The
criterion for the end of shelf-life varies depending on the special characteristics
of the product in question, and on consumer sensitivity. For most processed
perishable or semiperishable foods, assuming that the essential requirement for
product safety is met, their shelf-life is based mostly on sensory and
microbiological quality (Fu and Labuza, 1993). For products with an extended
shelf-life, as in the case of most frozen foods, slow chemical reactions are the
main deterioration pathways that are frequently not readily recognizable by
consumers. If the objective is to get a rapid estimation of the expected shelf-life
of the product, then an Accelerated Shelf-Life Test (ASLT) can be used in the
range of interest. Taking into account the limitations or possible deviations from
the Arrhenius law, the ASLT involves the use of the Arrhenius equation at
higher testing temperatures in a thorough shelf-life study and extrapolation of
the kinetic results to normal, non-abusive storage conditions. This procedure is
used to substantially reduce the experimental time through the acceleration of
the quality deterioration reactions. The successive steps that outline shelf-life
determination and ASLT methodology are presented in Taoukis et al. (1997)
When deciding on the important aspects of introducing a food product to marketcompetition, knowledge of its shelf-life and, in particular, the dependence ofquality loss on temperature conditions is essential (Fu and Labuza, 1993). Thecriterion for the end of shelf-life varies depending on the special characteristicsof the product in question, and on consumer sensitivity. For most processedperishable or semiperishable foods, assuming that the essential requirement forproduct safety is met, their shelf-life is based mostly on sensory andmicrobiological quality (Fu and Labuza, 1993). For products with an extendedshelf-life, as in the case of most frozen foods, slow chemical reactions are themain deterioration pathways that are frequently not readily recognizable byconsumers. If the objective is to get a rapid estimation of the expected shelf-lifeof the product, then an Accelerated Shelf-Life Test (ASLT) can be used in therange of interest. Taking into account the limitations or possible deviations fromthe Arrhenius law, the ASLT involves the use of the Arrhenius equation athigher testing temperatures in a thorough shelf-life study and extrapolation ofthe kinetic results to normal, non-abusive storage conditions. This procedure isused to substantially reduce the experimental time through the acceleration ofthe quality deterioration reactions. The successive steps that outline shelf-lifedetermination and ASLT methodology are presented in Taoukis et al. (1997)
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