Evaluation of two chemical disinfectants on E. coli present in chicken carcasses

Abstract

To ensure E. coli control in the processing operations of chicken carcass production plants, it is important to use an effective disinfectant at an appropriate concentration to reduce this pathogenic microorganism, which poses a health risk to consumers. This study evaluated two organic acid-based disinfectants: Lonlife (citric acid, ascorbic acid, and lactic acid) at concentrations of 500, 600, and 1200 ppm, and Titan (concentrated peracetic acid) at concentrations of 180, 195, and 390 ppm, on contaminated chicken carcasses from a processing plant located in Santander, Colombia. The evaluation of the disinfectants was carried out using the rinsing method with contact times of five (5), ten (10), fifteen (15), thirty (30) minutes, one (1), and two (2) hours. Under the test conditions evaluated, a 100% inhibition percentage was obtained for the active compound of the acid mixture at 500, 600 and 1200 ppm and for the active compound peracetic acid of 195 ppm from 30 minutes and at a concentration of 390 ppm inhibition at all times studied.