Sweet potato is a crop with rich nutritional valuesincluding carbohydrates, dietary fibers, vitamins, and minerals [1]. Currently, it is the sixth most popular and abundant staple food worldwide. It plays an important role in solving the issues of food, energy, natural resources and environment. Four commonlyavailable coloredsweetpotatospeciesinChina arewhite,yellow, orange, and purple, which have completely different chemical compositions