Purple sweet potato,rich in such nutrients as anthocyanidin,enjoys significant health benefits and bio-activity.The so-called purple sweet potato flour is a sort of dehydrated product processed with purple sweet potatoes as the raw material.It reserves the nutritional components and unique flavors of purple sweet potatoes at maximum level and can well present the orig-inal fragrance and color once being rehydrated.In this paper,the processing techniques of purple sweet potato flour as well as its application in making of bread,cake,noodles,and steamed buns were reviewed.We also explored the potential of purple sweet potato flour development in the future.
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