Sweet potato powder production process

Abstract

The invention belongs to the field of food processing, and particularly relates to a sweet potato powder production process, which comprises: (1) cleaning sweet potatoes; (2) grinding the cleaned sweet potatoes into powder with a grinding machine, and adding water to dilute to obtain a sweet potato paste; (3) pumping the sweet potato paste into a first filter with a pump to separate; (4) pumping the filtered filtrate in the step (3) into a second filter to filter, and pumping the obtained filtrate into a precipitation tank; and (5) adding a saturated sweet potato powder solution to the precipitation tank, stirring, carrying out precipitation, pumping the water on the upper layer out after completing the precipitation, taking the sweet potato starch, drying, and bagging. According to the present invention, multi-time washing is performed so as to reduce the soil content in the sweet potato powder, the fermented saturated sweet potato powder solution is adopted to carry out precipitation so as to reduce the required precipitation time and increase the powder yield, and other chemical substances are not required to be added to the sweet potato powder so as to improve the taste and the nutritional value of the sweet potato powder.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a production process of sweet potato flour. Background technique [0002] Sweet potatoes are rich in starch, vitamins, cellulose and other essential nutrients for the human body, as well as mineral elements such as magnesium, phosphorus, calcium, and linoleic acid. These substances can maintain the elasticity of blood vessels and are very effective in preventing and treating habitual constipation in the elderly. Unfortunately, most people think that eating sweet potatoes will make people fat and dare not eat them. In fact, on the contrary, sweet potatoes are an ideal diet food. Its calories are only 1 / 3 of that of rice, and it has the special function of preventing sugar from turning into fat because it is rich in cellulose and pectin. The way of eating sweet potatoes is relatively simple, so now sweet potatoes are often processed into sweet potato flour before eating...

AI Technical Summary

Problems solved by technology

The way of eating sweet potatoes is relatively simple, so now sweet potatoes are often processed into sweet potato flour before eating. During the production process of sweet potato flour, there will often be soil in the sweet potato flour, and the precipitation time of sweet potato flour is too long, which affects the quality of sweet potatoes. The taste of powder