Principle of isolation of starch from potato

As a high starch content material, potato is processed into potato starch thorough a series of physical process. But principle of isolation of starch from potato? Let me introduce the potato starch making process for you.

The following is the potato starch making process for principle of isolation of starch from potato:
Potato cleaning and washing-crushing-separating-desanding and refining-dewatering-drying and packing
1.potato cleaning and washing section: Thi is the first step about the principle of isolation of starch from potato. After being weighted and sorted, the fresh potato will be firstly transported into the cleaning machine to clean the sand, small stones, dirt and other impurities. Then the cleaned potato will be transported into the washing machine. To achieve a better cleaning effect,  it will be better to use the rotary washing machine, so that the impurities such as sand, stone, iron items will be thoroughly cleaned.

2.potato crushing section: After cleaning and washing, the potato is crushed. And the potato starch extraction process is the most important procedure for principle of isolation of starch from potato. Through the screw feeder, the potato goes into the rasper-a high efficient crushing machine and being crushed into potato slurry. Due to the crushing efficiency is critical to the overall system rate, a special design has been made in Doing Company for the rasper to achieve the highest possible photo crushing efficiency.
3.Sepateting section: The crushed photo contains fiber, protein and other impurities, therefore it need to separate the starch from the impurities. Centrifuge sieve is mainly used machine to separate the fiber and starch slurry. The slurry separation is also an important process for the principle of isolation of starch from potato which determines the yield of starch. Therefore this process need to be repeat several times to improve the potato starch content.

4. Desanding and refining section: After separating, there still exists sand in the potato starch. If the sediment concentration of the slurry is high, it will not only influence the taste of the starch but also affected the sales and price of starch. So the desanding process is a necessary process for the principle of isolation of starch from potato. The desander can remove sediment in the starch, improve the make the product quality to a higher class. For the principle of isolation of starch from potato, refining is also an important process. The protein, small fiber and cell contained in potato starch is separated out.
5.Dewatering section: The water content of starch milk coming out of hydrocyclone station is too high to dry directly. Therefore, for the principle of isolation of starch from potato, it is necessary to dehydrate starch milk first to reduce water content of starch. The dewatering machine is the vacuum filter. Vacuum pump makes vacuum negative pressure inside the vacuum drum. When starch milk contacts vacuum drum, starch milk is sucked on the surface, while the filtrate is sucked into the filtrate separation and filtrate pump away. The filter cake is scraped off by the scraper, then is conveyed into feed hopper of flash drier.

6.Drying and packing section: After dewatering process for the principle of isolation of starch from potato, the starch cake is dried in starch drying machine-flash dryer.After drying, starch is separated from air in a set of cyclone separators. Then the wet air leaves the cyclone separator and is discharged into the atmosphere by the ventilator. While the collected starch is transported by the screw conveyor to the packing unit. And the finished potato starch will be packed for storage.
Doing Company is a professional starch processing machine mankufacturer, we can not only provide you with solution for the principle of isolation of starch from potato, but also can offer you with high quality potato starch making machine. Welcome to contact us about the principle of isolation of starch from potato issue and potato starch making machine.


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