CTE Culinary State Practice Test

Quats are quaternary ammonium compounds, a class of sanitizing agents widely used on food-contact surfaces and equipment. They act as cationic surfactants that disrupt microbial cell membranes, quickly inactivating many bacteria and some viruses when used at the proper concentration and contact time. They’re popular in kitchens because they work well at room temperature, are relatively safe for stainless steel and plastics, and often leave a residual sanitizing effect for a short period. To use them effectively, surfaces should be clean first, the product must be diluted to the labeled strength, and the surface should stay wet for the recommended contact time. They’re different from chlorine-based sanitizers (bleach) and from alcohol-based sanitizers, which operate through other mechanisms and have different usage requirements.