Abstract: A method of reducing microbial contaminant comprises contacting the poultry, the surfaces used in processing poultry, or both with a synergistic antimicrobial composition during poultry processing. The method may provide an antimicrobial intervention that passes the FSIS antimicrobial reduction performance standards with nBPW as neutralizer, without any carry over after neutralization. In the first aspect, the synergistic antimicrobial composition comprises a peroxycarboxylic acid, a carboxylic acid, an anionic surfactant, and water. In the second aspect, a synergistic antimicrobial composition comprises a quaternary ammonium salt, a carboxylic acid, and water. In the third aspect, the synergistic antimicrobial comprises a quaternary ammonium salt, a peroxycarboxylic acid, and water.

Abstract: A method of controlling a biofilm comprises contacting the biofilm with probiotic species and contacting the biofilm with chemical disinfectant. The biofilm may be contacted with the probiotic species and the chemical disinfectant simultaneously or sequentially. The method provides a higher reduction in the amount of at least one microbial species in the biofilm, compared to a similar method applying only the chemical disinfectant. Furthermore, the method may provide an unexpected synergy between the probiotic species and the chemical disinfectant in controlling the biofilm.