Extraction of starch from sweet potato solution

Sweet potato, as a high quality starch raw material, is widely used in extraction of starch from sweet potato industry. With the development of sweet potato starch industry, sweet potato starch processing technology and sweet potato starch processing machine have been updated to meet higher market standard. As a professional manufacturer of sweet potato starch processing machine, our sweet potato starch processing technology is the result of our company's many years of experience and the efforts of our engineers.

Extraction of starch from sweet potato

1. Pretreatment of sweet potato
a. Sweet potato weighing and conveying: This is the first step for extraction of starch from sweet potato process. The sweet potatoes are weighed on the weighbridge and stored in the sweet potato yard. Then the raw materials are transported by conveyor to the sweet potato cleaning and washing machine where the stones, sand and other attached objects are separated.

b.Cleaning and washing: In extraction of starch from sweet potato process, the main purpose of this process is to remove the sediment from the outer cortex of sweet potatoes and wash the epidermis of sweet potatoes. The fresh sweet potato is cleaned in dry sieve in which the impurities are cleaned such as sand and small stones. Then we use the rotary washing machine for removing the soil, sand and other impurities. This process is the basis of guarantee the quality of starch, the cleaner the raw sweet potatoes are cleaned, the better the starch quality is in sweet potato starch processing plant.

Sweet potato washing machine

2. Starch extraction process
a. Crushing: The role of crushing is to destroy the structure of sweet potato, so that tiny starch granules can be disintegrated and separated from the roots of sweet potato. In extraction of starch from sweet potato process, the widely used crushing machine is rasper. The machine relies on high-speed operation to disintegrate sweet potato so that the starch granules are continuously separated.  And the disintegrated sweet potato is processed into starch slurry by using water as a medium.

b. Separating: Separating section is another key process for extraction of starch from sweet potato that affects the extraction rate of sweet potato starch. Its main purpose is to separate the fiber from starch.And normally we use multi stage centrifuge sieve for the separating process so as to achieve better separating effect.

c. Protein separation: In this process, we designed a 14-stage concentrated hydrocyclone station for extraction of starch from sweet potato. And the process water is pumped from the other end of the sweet potato starch machine to wash the starch in a countercurrent manner. The multi-stage washing can ensure the washing effect of the cyclone station, better remove the impurities such as fiber and protein contained in the starch milk.

Sweet potato starch dewatering machine

3.Starch dehydration and drying process
a. Dehydration: The dewatering process  for extraction of starch from sweet potato is mainly for reduce the water content of the wet starch. By adopting negative press principle, vacuum filter can effectively reduce the water content of starch so that it can be dried in the  flash dryer. After dewatering, the water content of starch milk first should be about 38%-40%.

b. Drying and packing: The wet starch dehydrated by vacuum filter is transferred to flash dryer for drying. It is required the moisture content of the finished starch is about 13.5% after drying process for extraction of starch from sweet potato. Then the starch is packed for storage. And this process requires a sufficient number of bags, a firm package, and timely storage.



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sweet potato starch processing plant
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how to extract starch from sweet potato

How to extract starch from sweet potato ?

A entire how to extract starch from sweet potato process is composed of the following process:
receiving-cleaning-washing-grinding-separating-concentration and refining-dewatering-drying and packing

How to extract starch from sweet potato 

1. Pretreatment of raw material
The pretreatment of raw material includes the raw material receiving, cleaning and washing section:
a. Raw material receiving section: Raw materials are the material basis of how to extract starch from sweet potato. The quality of raw materials is directly related to the quality of products. Therefore it will be better to choose high quality raw sweet potato without damage.

b. Sweet potato cleaning section: how to extract starch from sweet potato requires the raw material be cleaned thoroughly. For the cleanness of raw material has an influence on the following separation and purification of sweet potato starch. Dry sieve is used for cleaning process which can effectively remove the sand, soil, weed and other debris.

Sweet potato washing machine

c. Sweet potato washing section: The washing process is carried out by paddle washing machine for how to extract starch from sweet potato. sweet potato raw material is rolled along with the wall of the cylinder, and is sprayed, washed, bathed, mixed, and peeled with water as a medium for extraction of starch from sweet potato.

2. Extraction of sweet potato starch
a. Grinding section: The grinding unit is one of the most important part for how to extract starch from sweet potato which determines the sweet potato starch extraction rate. High-efficiency grinding machine allows the starch granules in sweet potato cells to be completely released, ensuring that the combined starch content in the sweet potato residue is minimized. DOING rasper is a high efficient machine which fully absorbs international advanced technology and has the features of high extraction rate and high grinding rate.

b. Separating section: Separating section is another key process for how to extract starch from sweet potato that affects the extraction rate of sweet potato starch. Its main purpose is to separate the fiber from starch. And the widely used separating machine includes centriguge sieve and fine fiber sieve. Good centrifugal sieve and centrifugal technology can allow the extraction of free starch from cassava cells.

c. Concentration and refining section: This process is for the concentration, recycling and refining of the starch milk. To ensure a better washing effect, DOING how to extract starch from sweet potato adopts 13-stage hydrocyclone station which can better remove the impurities of fiber, protein and other impurities contained in the starch milk. In this way, all the indicators of starch produced can be guaranteed to meet the standards.

Sweet potato starch dewatering machine 

3. Dewatering and drying of sweet potato starcha. Dewatering section: For how to extract starch from sweet potato, the main function of this section is to dewater the refined starch. Due to the high water content of refined starch, it need to be dewatered in vacuum filter so as to reach the desired quality for the next drying section. As a high efficient machine, vacuum filter has the features of high dehydration rate, energy saving and stable operation.

b. Drying and packing section: The wet starch is then conveyed into air flow flash dryer for frying. The steam pressure is controlled at 0.8 MPa. The how to extract starch from sweet potato requires that the moisture content of the finished starch is about 13.5% after drying. Packing and warehousing requires a sufficient number of bags, and timely packing for storage.


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Whatsapp/Phone:+86 135 2661 5783
Email: market@doinggroup.com
Tel: 0086 371 5677 1822
View more:
sweet potato starch machine
sweet potato starch processing plant
sweet potato starch production in Nigeria
how to make starch from sweet potato

Sweet potato starch processing plant and sweet potato starch machine

A entire production process of sweet potato starch processing plant is composed of the following process:
Choosing and receiving-cleaning and washing-cutting and crushing-separating-concentration and refining-dewatering-drying and packing

Sweet potato starch processing plant

Here is the detail analysis of DOING sweet potato starch production line
1. Raw material choosing and receiving:  As the first section for sweet potato starch processing plant, the raw material choosing plays an important role in the final starch quality.  The breaken sweet potato is easy to rot which will influence the other good materials. Therefore it will be better to choose high quality sweet potato without damage, no deterioration and no moth. Then the chosen sweet potatos are hauled to the storage yard after being weighed.

2. Stone removal and cleaning: Clean raw materials play an important role in the process of sweet potato starch processing plant, so the stone removal and cleaning units is the most important in the pretreatment stage of the raw materials. This unit is to completely remove the sand, mud and other foreign materials in the sweet potato. Then the cleaned sweet potato is transported into rotary washing machine for further washing process.

3. Sweet potato washing: The washing process for sweet potato starch processing plant is carried out by paddle washing machine. sweet potato raw material is rolled along with the wall of the cylinder, and is sprayed, washed, bathed, mixed, and peeled with water as a medium.

Sweet potato crushing machine

4.Cutting and crushing: Due to the size of the sweet potato, it need to be cut into small pieces before crushing so that the crushing process can be easier. Crushing is a vital sweet potato starch machine for sweet potato starch processing plant because it determines the extraction rate of starch. Doing Company independent research and development of high efficient crusher which can obtain higher percentage of free starch. After crushing, the sweet potato is crushed into starch slurry.

5. Separating: Separating section is another key process for sweet potato starch processing plant that affects the extraction rate of sweet potato starch. Its main purpose is to separate the fiber from starch. And the widely used separating machine includes centriguge sieve and fine fiber sieve. Good centrifugal sieve and centrifugal technology can allow the extraction of free starch from cassava cells.

6. Concentration and refining: Concentration and refining is another most important unit of sweet potato starch processing plant, and the quality starch are completely guaranteed in the cyclone refining unit. The impurities in the starch slurry are completely removed by physical means so as not to affect the quality of the starch product. The 13-stage washing can ensure the washing effect of the cyclone station, which can better remove the impurities such as fibers and proteins contained in the starch milk, and ensure that there is no impurity in the starch milk coming out from the cyclone station.

Sweet potato starch refining machine

7. Dewatering: After concentration and refining process, the concentrated starch milk still contains a large amount of water, and thus must be dehydrated to facilitate drying for sweet potato starch processing plant. It is required that the wet starch has a low moisture content of 38% after dehydration.

8. Drying and packing: Then it is the drying and packing process for sweet potato starch processing plant. In sweet potato starh production line, factory usually use flash dryer for drying of starch. The high speed hot air fully mixed with wet starch, by heat exchanging, the wet starch is dried. The whole drying process is completed in an instant. After that, the collected starch is packed into 25kg or 50kg finished products.



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Whatsapp/Phone:+86 135 2661 5783
Email: market@doinggroup.com
Tel: 0086 371 5677 1822
View more:
sweet potato starch machine
sweet potato starch production in Nigeria
extraction of starch from sweet potato
how to make starch from sweet potato

Sweet potato starch machine

The production process of sweet potato starch is a physical separation process, which is to separate the starch from cellulose, protein, inorganic substance and so on. By by taking use of the proprety that starch is insoluble in cold water and is heavier than water in proportion, we use special mechanical sweet potato starch machine to separate starch from water suspension to achieve the purpose of recovering starch. The Doing Company sweet potato starch machine can automatically complete the whole process of cleaning, washing, crushing, separating, concentration and refinement, dehydration, drying and packaging of sweet potato.

Sweet potato starch machine 

1. Sweet potato cleaning machine: The  sweet potato starch processing technology requires the raw material be cleaned thoroughly. For the cleanness of raw material has an influence on the following separation and purification of sweet potato starch. Dry sieve is widely used sweet potato starch machine for cleaning process which can effectively remove the sand, soil, weed and other debris.

2. Sweet potato washing machine: The washing process is carried out by paddle washing machine. Sweet potato raw material is rolled along with the wall of the sweet potato starch machine, and is sprayed, washed, bathed, mixed, and peeled with water as a medium.

3. Cutting and crushing machine: Due to the size of the sweet potato, it need to be cut into small pieces before crushing so that the crushing process can be easier. Crushing is a vital process in sweet potato starch production line because it determines the extraction rate of starch. Doing Company independent research and development of high efficient sweet potato starch machine for crushing which can obtain higher percentage of free starch. After crushing, the sweet potato is crushed into starch slurry.

Sweet potato crushing machine

4. Separating machine: Separating section is another key process in hot sale sweet potato production line that affects the extraction rate of sweet potato starch. Its main purpose is to separate the fiber from starch. And the widely used sweet potato starch machine for separating includes centriguge sieve and fine fiber sieve. Good centrifugal sieve and centrifugal technology can allow the extraction of free starch from cassava cells. And normally we use multi stage centrifuge sieve for the separating process so as to achieve better separating effect. The fine fiber sieve is a low speed centrifugal device which is mainly for the separation of fine fiber from starch.

5. Concentration and refining machine: Instead of traditional precipitation process, the concentration and refining process can separate non-starch substances with high efficiency, thus to improve the quality and whiteness of sweet potato starch. And hydrocyclone station is the widely used sweet potato starch machine in sweet potato starch production line for this purpose. Hydrocyclone station can effectively separate non-starch substances such as protein, fiber and cell sap in starch.

6. Dewatering machine: The dewatering process is mainly for reduce the water content of the wet starch. By adopting negative press principle, this sweet potato starch machine can effectively reduce the water content of starch so that it can be dried in the  flash dryer. After dewatering, the water content of starch milk first should be about 38%-40%.

Sweet potato starch refining machine

7. Drying and packaging machine: The purpose of this section is to dry the dehydrated starch to the desired moisture content to meet market standard. The air is heated to the required temperature through the filter net through the heat exchanger, and the hot air is sucked into the flash dryer by the fan. Then the high speed hot air mixes with the wet starch and dry the starch by heat exchange. The air and starch are separated in the cyclone separation device. The air is discharged out of the sweet potato starch machine while the starch is transported into the packing machine. Then the final sweet potato starch is packed by semi-automatic machine for storage.

Click here to give you the best price
Whatsapp/Phone:+86 135 2661 5783
Email: market@doinggroup.com
Tel: 0086 371 5677 1822
Related:
sweet potato starch processing plant
sweet potato starch production in Nigeria
extraction of starch from sweet potato
how to make starch from sweet potato