Final answer:
Prepped lettuce typically lasts 1-2 weeks when refrigerated. It is important to wash hands before handling and to rinse the lettuce before consumption to prevent contamination. If left at room temperature for over two hours, it should be discarded to prevent the spread of foodborne diseases.
Step-by-step explanation:
The shelf-life of prepped lettuce is influenced by short-term temperature stability and post-preparative stability. Generally, prepped lettuce should be stored in the refrigerator and can last for about 1-2 weeks, depending on how it is stored and when it was prepped. It is important to maintain regular handwashing before handling or preparing food, including lettuce. One should always ensure to rinse fresh produce before eating, even if the outer skin or rind is not going to be consumed, as it may contain microbes or toxins that can contaminate the inside once cut or peeled. Leftovers or any prepped lettuce should be refrigerated as soon as possible to prevent the growth of bacteria. If the lettuce or any perishable food is left out at a temperature between 4 and 60 degrees C (40 and 140 degrees F) for more than two hours, it should be discarded to prevent foodborne diseases.