Why does garlic turn purple when planted after peeling?

Garlic will turn purple when planted after peeling. The phenomenon of braid is that it will react chemically in the sun and change under ultraviolet radiation. This is a very natural phenomenon, just like our ordinary potatoes, if exposed to the sun, they will turn green because they reflect chemical changes. Therefore, if you want to keep your garlic or potatoes, you must avoid the sun. This is also a long-term experience.