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Shortwave ultraviolet light (UV-C) disinfection is an emerging technology used to enhance food safety by reducing the pathogen load. Computational fluid dynamics (CFD) served as a numerical simulation tool to calculate the average radiation intensity within a disinfection chamber. The resulting CFD data was employed to estimate the UV-C inactivation kinetic parameters for  Escherichia coli  O157:H7,  Salmonella  Typhimurium, and  Listeria monocytogenes . Experimental procedures involved irradiating bacterial suspensions with UV-C doses ranging from 0 to 6.028 kJ/m 2 . The inactivation of  S.  Typhimurium was described using a log-linear equation, while UV-C survival curves for  E. coli  O157:H7 and  L. monocytogenes  were best fitted to Weibull model. Subsequently, the integration of CFD simulations and kinetic parameters enabled the estimation of UV-C doses approaching 6 kJ/m 2  for the treatment of fresh-cut ‘Tommy Atkins’ mangoes inoculated with the mentioned microorganisms. This integrated approach partially predicted the inactivation of pathogens on the surface of mango spears.

Modeling of UV-C survival of foodborne pathogens and predicting microbial inactivation on fresh-cut ‘Tommy Atkins’ mango using CFD