Electrochemically activated water reduces contamination by Salmonella Heidelberg in chicken breasts.

Abstract

Salmonella spp. are one of the most common causes of foodborne disease outbreaks worldwide. Disinfectants are widely used in the food industry to reduce pathogen contamination, but the increase in antimicrobial resistance has reinforced the global need for effective and environmentally friendly alternatives. In addition, Salmonella Heidelberg, an emergent serotype, has been described as highly persistent in facilities of poultry production chain. In this context, the present study aimed to evaluate the action of electrochemically activated water (ECAW), a biocide produced from water, salt, and electricity, against aerobic bacteria, including S. Heidelberg, experimentally inoculated in chicken breasts. Chicken breasts fragments (2 g) were inoculated by immersion in the bacterial inoculum solution and then were left in a petri dish for 10 min to allow microbial attachment. Fragments were treated by immersion in ECAW (treated group) or 0.1% sterile peptone water solution (control group) at 25 °C for 10 min. After, chicken breasts slices were transferred to sterile tubes and were incubated at 7 °C and at three contact times of 5, 30, and 60 min to simulate chiller environment. The average reduction was 1.07 log₁₀ CFU/g after treatment, and the bacterial counts decreased significantly (p < 0.05) with increasing contact time. These results demonstrate the potential use of this technology in chicken slaughter plants.