What happens to a non starch food when iodine is added?

When iodine is added to a non-starch food, there is typically no color change, as iodine specifically reacts with starch to produce a blue-black color. Non-starch foods, such as proteins, fats, or sugars, do not contain the amylose or amylopectin that iodine interacts with. As a result, the iodine remains brown or yellow, indicating the absence of starch.