Sweet potato whole powder production method

Sweet potato has rich nutritional value and wide range of uses. It has a large planting area in China. However, the fresh sweet potato has a high moisture content, and it is difficult to store for a long time. The nutrient consumption during storage is large and the disease loss is serious. Therefore, in order to extend the supply time of sweet potatoes, they must be dried. The experiment focused on the development of a sweet potato powder, which facilitates storage and prolongs storage time. This sweet potato powder can be used as ingredients for steamed buns, rolls, breads, pastries, and fillings. (I) Operating Procedures Raw materials: Choose three types of sweet potato color: purple, orange, and yellow (2) Process Three kinds of raw sweet potatoes are washed → peeled → shredded tablets → color protection → drying → comminution ( Measuring moisture) → Packing 1 Cleaning: It must be cleaned and related to the final quality of the product. 2 Peeling: Remove the skin of the sweet potato with a bamboo knife, especially the concave part of the sweet potato skin. 3 Slices or silk: The peeled sweet potatoes are cut into a certain size potato chips or sweet potato with a vegetable slicer. 4 Color protection: Prepare a 0.5% solution with salt, and soak sweet potatoes or potato chips in a few minutes. 5 Drying: Drying with drying equipment to ensure product hygiene, and pay attention to the temperature, generally between 45 ~ 50 °C, drying time can be determined according to the size of potato chips, potato chips, so that the final moisture content of 6% or less. 6 Crushing and packaging: The dried sweet potato was crushed with a hammer mill to make the fineness of the sweet potato powder about 80 mesh. (III) Results and analysis The three dried sweet potato powders were superior in color to purple and orange sweet potato powder, and the yellow sweet potatoes were dark in color. Therefore, purple and orange sweet potato varieties were selected as raw materials. The sweet potato powder produced by the above method can be used as a food material to make a variety of foods. Such as sweet potato cake, sweet potato cake, sweet potato roll, sweet potato bread, etc., production methods steamed, boiled, fried can be.