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- Title
Modeling of UV-C survival of foodborne pathogens and predicting microbial inactivation on fresh-cut 'Tommy Atkins' mango using CFD.
- Authors
Garzón-García, Alba M.; Ramos-Enríquez, José R.; Ruiz-Cruz, Saúl; Dussán-Sarria, Saúl; Hleap-Zapata, José I.; Márquez-Ríos, Enrique; Del-Toro-Sánchez, Carmen L.; Lobatón-García, Hugo F.
- Abstract
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/m2. 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/m2 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.
- Subjects
MICROBIAL inactivation; FOOD pathogens; ESCHERICHIA coli O157:H7; COMPUTATIONAL fluid dynamics; MANGO; ESCHERICHIA coli
- Publication
International Journal of Food Engineering, 2024, Vol 20, Issue 4, p269
- ISSN
1556-3758
- Publication type
Article
- DOI
10.1515/ijfe-2023-0075