Tag: Iodine reaction

The well-known iodine test in biology is based on the interaction between iodine solution and starch. When a food will give blue-black color when tested with iodine, it is a clear indicator that the food contains starch, a complex carbohydrate.

The iodine-starch test, a staple of chemistry and biology labs, has been used to detect starch since its discovery in 1814. This profound color change reveals the presence of starch and offers a glimpse into the molecular structure of this important plant carbohydrate.