Which of the following is a method of chemical sanitizing?

Quaternary Ammonium (commonly referred to as QUAT) is a widely recognized method of chemical sanitizing used in food service and institutional settings. It is effective at reducing harmful microorganisms on various surfaces, making it a popular choice for maintaining sanitary conditions in food preparation areas and dining facilities.

QUAT sanitizers work through a mechanism that disrupts the cellular membrane of bacteria, effectively killing pathogens. They are versatile and can be used on various surfaces, such as countertops, utensils, and kitchen equipment. Additionally, QUATs are known for their low toxicity and pleasant odor, making them suitable for environments where food is prepared and consumed.

The other substances mentioned do have their uses in cleaning or mildly sanitizing but do not meet the specific requirements or effectiveness levels defined for chemical sanitizers in a food service context. Hydrogen peroxide, while a disinfectant and sometimes used in food processing, is not typically classified as a primary sanitizing agent in food preparation settings. Vinegar is often used as a cleaning agent due to its acidity but lacks sufficient antibacterial efficacy to be considered a sanitizing agent. Baking soda is primarily known for its deodorizing and cleaning properties rather than for sanitizing purposes.