2026-04-17T21:17:24Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/74972026-02-10T12:31:04Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

00925njm 22002777a 4500 dc Illera Gigante, Alba Ester author Souza, Vanessa Rios de author Nikmaram, Nooshin author Tang, Linyi author Keener, Kevin M. author 2022-12 Salmonella enteritidis (SE) accounts for more than 70% of Salmonella spp. infections in humans with a primary source being chicken eggs, that can result from post-lay SE cross-contamination of the shell from contaminated equipment or the environment. The objective of this study was to apply a HVACP treatment that can achieve a minimum 5-log reduction in SE on the surface of artificially inoculated shell eggs with an initial bacterial load of 108 CFU/egg, after a previous disinfection. Optimized HVACP treatment conditions were an indirect treatment with air at 60% humidity at 100 kV for one minute treatment and six hours post-treatment or alternatively, five minutes of treatment and four hours post-treatment. Egg quality parameters of Haugh unit (HU), pH, color, and vitelline membrane and shell strength were tested under the optimized conditions and showed no significant difference (p > 0.05) between treated and untreated eggs. Industrial relevance: Missing information for a possible scale up of a cold plasma system for egg surface decontamination has been addressed by an optimization of HVACP treatment focused on treatment and posttreatment time, essential parameters to have into account in the food industry. These results demonstrate that HVACP is an effective decontamination method for SE on chicken shell eggs and provides a baseline for a future scale up of the process, showing that different combinations of treatment variables can achieve the desired decontamination without affecting to key quality parameters of the egg such as Haugh Unit or vitelline membrane strength. 1466-8564 http://hdl.handle.net/10259/7497 10.1016/j.ifset.2022.103210 Chicken eggs Salmonella enteritidis Pathogen decontamination High voltage atmospheric cold plasma (HVACP) Process optimization High voltage atmospheric cold plasma decontamination of Salmonella enteritidis on chicken eggs