How does proper or improper handling of food affect the number of germs on food?
plastic sealable baggies; latex gloves; several slices of bread; labels
- Place latex gloves on your hands. Quickly take a slice of bread from the wrapper and place it in a baggie. Seal the baggie, label it, and place it to the side.
- Take a second slice of bread and touch both sides of it with your palms and fingers. Place it in a second sealed baggie, label it, and place it to the side.
- Wash your hands thoroughly with soap and water, then handle a third slice of bread the way you did with the second slice. Place it in a third sealed baggie, label it, and place it to the side.
- Take the fourth slice of bread and pass it from person to person. Place it in a fourth sealed baggie, label it, and place it to the side.
- Take the fifth slice of bread, drop it on the floor, pick it up, and place it on the table. Place it in a fifth sealed baggies, label it and place it to the side.
Check the baggies once a day for two weeks and record your observations on a chart.
What conclusions can you make from your observations?
What other ways could your imaginary restaurant handle the bread that might change your results?
What would happen if you repeated the experiment with other restaurant foods like lemon slices?
Eating in Restaurants Safely