Preparation method of whole sweet potato powder

Abstract

The invention provides a preparation method of whole sweet potato powder. The preparation method of the whole sweet potato powder includes the following steps that sweet potato raw materials are selected, wherein the sweet potatoes which do not have rotted parts, diseased parts, sprouts and green parts are selected; the selected sweet potato raw materials in step 1 are preprocessed to obtain preprocessed sweet potato shreds, wherein during preprocessing, the sweet potatoes are washed, peeled and cut into shreds, and finally, the sweet potato shreds are soaked in a liquid color retention agentto be subjected to color retention; after the preprocessed sweet potato shreds are cooked, edible alcohol is added, then, the preprocessed sweet potato shreds are mashed into mashed sweet potatoes, and the mashed sweet potatoes are subjected to vacuum drying. The preparation method of the whole sweet potato powder has the advantages that by controlling the shredding diameter of the sweet potato shreds, the cooking time is shortened, and the technology efficiency is improved; by adding the edible alcohol, during vacuum drying, the time of vacuum drying can be shortened, the temperature of vacuum drying can be reduced, and the situation is avoided that due to the over-high temperature, it is difficult to control the heating degree so that scorching can occur; through technology control, a product is golden in the appearance, smooth in mouthfeel and good in reconstitution property, and the quality of the sweet potatoes is well maintained.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a preparation method of potato whole powder. Background technique [0002] Sweet potato is also known as sweet potato, and its scientific name is sweet potato. Sweet potato powder is one of the dehydrated potato products. Using fresh sweet potatoes as raw materials, through a series of processes, the powdered products containing all dry matter except potato skins are collectively called sweet potato powder. Sweet potato powder retains the original nutrition, color and flavor of sweet potatoes, and contains fresh sweet potatoes. All dry matter except the potato skin, such as starch, protein, sugar, fat, fiber, vitamins, minerals, etc., the loss rate of health function components is extremely low, and the utilization rate of potato is 85%~90%. The potato after rehydration The whole powder is mashed after steaming fresh sweet potatoes, and has the nutrition, flavor and ta...

AI Technical Summary

Problems solved by technology

[0003] At present, there have been many studies on the optimization of the processing technology of whole potato powder. The cutting method, cooking method or dehydration method are all key factors affecting its quality, especially the dehydration method is one of the main factors affecting its quality. , the current dehydration method is mainly high-temperature baking, and the vacuum drying method that is currently being studied. High-temperature baking will cause surface hardening, while vacuum drying often takes about six hours of drying time, which takes a long time.