Evisceration makes chicken carcasses susceptible to microbial contamination from gastrointestinal sources. A preventive action between spray washing and air chilling, a yogurt dip, may eliminate concerned contamination and enhance the bactericidal effect of nisin on Salmonella. This study was designed to determine whether synergism occurred with or without the application of an oil-beeswax coating. A 5 h yogurt dip then nisin with coating' and a 5 It yogurt dip then nisin, indicated significant inhibition of mesophilic aerobic bacteria and Sahmonella with 2.11 and 1.97 log reductions, supported by pH, chromatographic and sensory findings (p < 0.01). (C) 2003 Elsevier Ltd. All rights reserved.