Priming with nano-aerosolized water and sequential dip-washing with hydrogen peroxide: An efficient sanitization method to inactivate Salmonella Typhimurium LT2 on spinach
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© 2015 Elsevier Ltd. All rights reserved. This work investigates the efficacy of a combined sanitization approach involving pretreatment of nano-aerosolized water followed by H2O2 dip-washing against Salmonella Typhimurium LT2 on spinach. The addition of a pretreatment step utilizing nano-aerosolized water for 5 min significantly increased the sanitization efficacy: The number of surviving bacteria was 5.2 ± 0.8 CFU/g, 4.7 ± 0.2 CFU/g, and 1.1 ± 1.1 CFU/g for H2O2 dip-washing only, H2O2 spraying only, and for the combined treatment, respectively. The enhanced efficacy of the combined treatment was attributed to the ability of nano-aerosolized water to reach and fill crevices that tended to form micro airpockets with the liquid (bulk) sanitizer. Overall, these findings may suggest that a short priming step involving nano-aerosolized water may be incorporated in traditional liquid sanitization approaches to enhance their effectiveness.
author list (cited authors)
Zhang, M., Oh, J. K., Huang, S., Lin, Y., Liu, Y. i., Mannan, M. S., Cisneros-Zevallos, L., & Akbulut, M.