Method for producing potato flake with high dietary fiber content

Abstract

The invention discloses a method for producing potato flake with high dietary fiber content. The method comprises the following steps: after the byproduct of wet potato residue generated through flour-residue separation during potato starch production is subject to acid base interaction, oxidation or enzymolysis and micronization, the micronized dietary fiber of potato is mixed with mashed potatoes obtained through steaming, boiling and smashing in a certain content ratio, the mixture is dried through a roller dryer, the moisture content in the product is smaller than or equal to 10 percent, and the potato flake rich in dietary fiber is produced after crushing and sieving. The method of the invention is suitable for being implemented in whole potato processing production enterprises, the produced potato flake is rich in an excess amount of dietary fiber and can be used as an auxiliary material for processing other foods, therefore, the economic value of the byproduct of starch production, i.e., wet potato residue is greatly increased, and pollution to the environment is reduced.

Description

technical field [0001] The invention relates to a production method of whole potato flour, in particular, the wet potato residue produced in the process of producing potato starch is purified and miniaturized, kneaded into the whole flour production process, and steamed and mashed The mashed potatoes are mixed together, dried with a drum dryer, crushed, sieved and packaged to produce a production method of potato flour with high dietary fiber content. Background technique [0002] Potatoes are one of the four major crops in the world, and China is a major producer. According to statistics, China's planting area is about 4.88 million hectares (73.2 million mu), accounting for 25% of the world and 60% of Asia, with a total output of 70 million tons. More than 20% of the world and 70% of Asia. [0003] Potato tubers are an important raw material for producing starch. Potato starch has the characteristics of large particles, low gelatinization temperature, high paste viscosity ...

AI Technical Summary

Problems solved by technology

However, the moisture content of wet potato dregs is as high as 90%, and the combination of water and dregs is very tight. It is difficult to remove water by ordinary mechanical methods.

Direct drying of wet potato residues consumes a lot of energy. To obtain 1 ton of dry potato residues needs to be dried to remove about 8-9 tons of water. The cost of energy consumption is very high. As a low-grade feed product, dry potato residues are not expensive. , this kind of utilization has only negative economic benefits, which inhibits the enthusiasm and motivation of potato starch production enterprises to use wet potato residue and control its pollution

In the production of potato starch in China, except for part of the wet potato residues that are directly used by farmers for feeding, the rest are mostly stacked and retting in the open air, to be used as feed and farm fertilizer. Such treatment requires a large amount of land. And it will pollute the local air, soil and groundwater, and also cause great waste

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