Banana peels, usually thrown away, can actually be used to make valuable pectin, a useful ingredient in food and medicine. Scientists used ultrasound to extract pectin from banana peels and found the best conditions for extraction. They discovered that the pectin extracted was similar to commercial pectin in quality. This means that banana peels could be a good source of pectin for industries like food, drinks, and medicine. More research is needed to make the pectin even better and explore its health benefits.