Raw (or green) bananas are simply unripe yellow bananas that haven’t converted much of their resistant starch into more easily digestible sugars. This is usually what makes a banana unattractive to eat since green bananas tend to be more waxy and starchy in their consistency, and decidedly less sweet. Most bananas are green when they are picked, but they ripen gradually while being shipped.
Green bananas are high in protopectin, which gives off methylene gas and converts starch into digestible fiber over the course of the ripening process.Yellow bananas are lower in this particular type of resistant starch, which makes them easier for the body to digest. While it is perfectly safe to eat green bananas, most people are turned off by the taste, and therefore choose the traditional bananas they know and love. That being said, this fruit does have an impressive nutritional profile and a number of unique health benefits that may make it preferable for some people.