Is sugar stored in the onion or potato?

In onions, sugar is stored as a carbohydrate called fructan. Fructans are a type of soluble dietary fiber that is not digestible by humans. They can, however, be broken down by bacteria in the large intestine, which produces gases that can cause bloating and flatulence.

In potatoes, sugar is stored as a starch called amylose. Amylose is a type of complex carbohydrate that is broken down into glucose, which is used by the body for energy. Potatoes also contain a small amount of fructose, which is a simple sugar.

The amount of sugar in onions and potatoes can vary depending on the variety and the growing conditions. In general, onions contain more sugar than potatoes. However, both onions and potatoes are considered to be low-sugar foods.