Trisodium Phosphate
Food-grade trisodium phosphate (TSP) is among several antimicrobial agents that have been approved by FDA. It is "generally recognized as safe" (GRAS) and has been safely used for years, particularly in processed cheese. TSP is used in poultry slaughter as an antimicrobial agent for raw poultry carcasses. When immersed in and/or sprayed in a dilute solution on chickens, it can significantly reduce bacteria levels.