What is process of starch extraction from cassava root ?

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What is process of starch extraction from cassava root ?

FAQ / Leave Message / Chat Online Feb 21, 2019

As one of the most important staple crops in tropical Africa, cassava plays an important role in alleviating the food crisis in Africa due to its effectively produced food energy, year-round availability, tolerance for extreme environment and its suitability of agriculture and food systems in Africa.

starch extraction from cassava root plantCassava starch extraction machine

Traditionally, cassava root has been processed into different products in a variety of ways according to customs and preferences of different countries. The processing of cassava starch is particularly suitable for developing and rural industries, and high quality starch can be obtained from cassava with the help of high efficient cassava starch processing machine. Then we will introduce the process of starch extraction from cassava root.

For the process of starch extraction from cassava root, there are several important procedures need take attention, here we will focus on the starch extraction steps.

starch extraction from cassava root machineCassava grinding machine

Cassava grinding unit

The grinding unit is the most important factor in starch extraction from cassava root process which determines the starch extraction rate and starch yield. Efficient rasper allows the release of starch particles from cassava cells to minimize the amount of combined starch in cassava dregs. A specially designed outlet is connected under the temporary storage bin. The outlet is connected with a adjustable feed screw, which has an outlet and is connected to the feeding inlet of rasper through a short pipe. When the system wants to feed, it need to adjust the feed screw frequency according to the need and start feeding. The grinded starch slurry is pumped into the sand removal unit for removing sand out of starch slurry. The capacity of the whole starch extraction from cassava root can be adjusted through the adjustable feed screw.

starch extraction from cassava root machineCentrifugal sieve

Centrifugal extraction unit

Centrifugal extraction unit is another key unit that affects the extraction rate of cassava starch in the process of starch extraction from cassava root. High efficient centrifuge sieve can be used to extract free starch from cassava cells. The extraction unit is composed of three centrifuge sieve groups, each centrifuge sieve is equipped with a fiber pump and a foam pump. The starch slurry coming from the desander enters the first class extraction sieve for starch extraction from cassava root. Under the action of high speed centrifugal force of the sieve basket rotating at high speed, the starch passes through the sieve net and the cassava residue is left on the sieve surface and is discharged out. At the front of the sieve, there is a pressure of flushing water, which is squirted out of the nozzle to make the cassava residue roll constantly, so that the starch in the cassava residue can be fully exited for starch extraction from cassava root. Washing water is also designed on the back of the screen basket, only the backflushing water is opened regularly to ensure that pectin and potato residue do not block the screen.

DOING cassava processing machine engineerDOING cassava processing machine engineer

The starch milk is pumped through the foam be pumped to the hydrocyclone station for washing, and the cassava residue is pumped through the fiber pump to the second stage centrifuge sieve for starch extraction from cassava root. The cassava dregs containing certain starch is further extracted in the second stage centrifuge sieve. While the starch-containing water entered the process water of the extraction system through the foam pump, and the cassava dregs is continuously pumped to the third-stage extraction sieve through the fiber pump. Similarly, the third-stage extraction screen is still subjected to starch extraction from cassava root, he sieved material still enters the process water of the extraction unit, and the cassava residue is pumped to the dewatering unit of cassava residue. The three-stage tandem centrifugal sieve group can ensure that all free starch is collected into the extraction system, so that there is no free starch in cassava dregs, and the rate of starch is fully guaranteed.

In conclusion, the above is the introduction of the main process for starch extraction from cassava root. Henan Doing Machinery is a company integrates R&D and manufacturing complete set cassava starch processing machine, any issue about the process of starch extraction from cassava root, welcome to consult our engineer.

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