Dishwashers are effective at killing bacteria and other harmful microorganisms through a combination of high water temperatures, detergent action, and the mechanical force of water jets. Here's how dishwashers work to eliminate bacteria:
High Water Temperature: Dishwashers typically use hot water during the wash cycle. The water temperature in a dishwasher usually reaches around 120 to 140 degrees Fahrenheit (49 to 60 degrees Celsius). At such high temperatures, many types of bacteria, viruses, and other microorganisms are killed or deactivated, rendering them harmless.
Detergent Action: Dishwasher detergents are specifically designed to break down and remove food particles, grease, and stubborn stains from dishes. These detergents often contain surfactants and enzymes that can help dissolve and lift organic material, including bacteria, from the surface of dishes.
Mechanical Force: Dishwashers use powerful water jets to spray and rinse dishes thoroughly. The force of the water helps to dislodge and wash away any remaining food particles and bacteria, leaving the dishes clean and sanitized.
Steam and Drying: During the drying phase of the dishwasher cycle, steam is often produced, further aiding in killing any remaining bacteria on the dishes and inside the dishwasher.
It's important to note that while dishwashers are effective at removing and killing many bacteria and other microorganisms, they may not eliminate all types of pathogens or spores. Therefore, it's essential to handle and store dishes appropriately before and after using the dishwasher, and to follow good food safety practices in the kitchen. Additionally, regular maintenance and cleaning of the dishwasher itself are necessary to ensure it functions properly and maintains its sanitizing capabilities.