Abstract
Today, the increasing demand for minimally processed foods that are nutritious, sensorially acceptable, and free from microbial, chemical and physical hazards, challenges research and development to establish alternative methods to reduce the level of bacterial contamination. As one of the newly developing non-thermal methods, pulsed light is a technology for the fast, mild, and residue-free surface decontamination of meat and meat contact materials in the meat processing environment. This review provides specific information on pulsed light technology and the feasibility of its application for unpackaged and packaged meat and meat products as well as meat contact materials. The advantages, limitations and achieved effects of pulsed light on microbial inactivation, lipid peroxidation, sensory quality and color of meat, seafood and meat products are illustrated and discussed in relation to its implementation on the industrial level.
Highlights
Food safety has become an essential priority for authorities and consumers worldwide, especially concerning perishable products such as those of animal origin
The results indicated a significant reduction in the initial microbial count (≈1 log CFU/cm2) of the samples inoculated with Vibrio parahaemolyticus, E. coli, L. monocytogenes and Salmonella Typhimurium after applying pulsed light (PL) treatments (8.4 and 11.9 J/cm2), and obtained a significant improvement in the food safety of these products
The meat sensory quality changes induced by PL are varied and depend on animal species, type of meat and PL dose applied
Summary
Food safety has become an essential priority for authorities and consumers worldwide, especially concerning perishable products such as those of animal origin. Different sources describe PL, known as intense light pulses (ILP), pulsed white light and pulsed UV light, as a fast and mild alternative decontamination method that retains the natural appearance of the foods while being of energy saving and of environmental interest. It is based on the application of short time light pulses with an intense broad spectrum [3].
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