Description:
Food doesn¡¯t last. In days, sometimes hours, bread goes moldy, apple slices turn brown, and bacteria multiply in mayonnaise. But you can find all of these foods out on the shelf at the grocery store — hopefully unspoiled -- thanks to preservatives. But what exactly are preservatives? How do they help keep food edible? And are they safe? Eleanor Nelsen investigates.
Questions:
1. Why artificial food preservatives are bad for our health?
2. What are cultured foods? Give some examples.
3. Should we worry about preservatives? Why or why not?