Why is purple potato purple potato is purple reason

1. Purple potatoes are purple in color all over, no matter whether it is the outer skin or the inner flesh, and even some of them are still dark purple. The reason for this color is related to its composition. Purple potato contains a large number of anthocyanins, this water-soluble pigment resides in the cellular fluid, the cellular fluid is acidic, the color changes to purple; cellular fluid is alkaline, the color changes to blue. Purple potato's cytosol is acidic, and its tubers appear purple.

2, there are many natural purple plants in nature, such as purple potatoes, and purple kale and so on.