In the cassava starch production line, the ultimate goal is to obtain pure starch. However, sometimes the starch may contain a significant amount of impurities. These impurities can arise from several reasons, which we will explore in this article. Henan Jinrui, a leader in cassava processing technology, provides insights and solutions to these challenges.

The quality of the raw material - cassava decides the quality of cassava starch. The poor quality of cassava is also the crucial reason caused excessive impurities in cassava starch production.

- Contaminated Cassava Roots: Soil, sand, pebbles, or organic debris adhering to the roots increase impurities.

- Rotted or Moldy Tubers: Decomposed cassava releases unwanted residues that mix with starch.

- High Fiber Content: Older or overgrown cassava contains more fibrous material, leading to higher impurities.

Raw materials-cassava

Inefficient cleaning equipment can cause the cassava to contain soil impurities after cleaning, which will affect the quality of subsequent cassava flour production and cause excessive impurities in the cassava starch. So it's important to select the appropriate cleaning and washing equipment. Paddle washing machine designed by Henan Jinrui for washing fresh cassava , can have a good effect on washing.

- Inadequate washing equipment: Poorly designed or malfunctioning washers fail to remove dirt and sand.

- Insufficient water supply or recycling: Dirty water reuse reintroduces impurities.

- Short washing time: Rushed cleaning leaves residual contaminants.

Cassava cleaning machine-peeler

Crushing is a important step in starch processing. If the crushing is incomplete, there will be more fibers, which can cause the excessive impurities in cassava starch production. Inefficient extraction also increases cell wall debris in the starch slurry. Henan Jinrui Food Company configures a rasper machine for cassava crushing, with a crush rate reaching up to 96%. This ensures complete breakdown and effectively reduces such issues.

Starch separation and extraction are important processing steps to remove impurities such as fiber in starch. Incomplete separation and extraction is also a significate reason for excessive impurities in cassava starch. In the starch processing industry, choosing the right starch separation equipment plays an important role in reducing impurities in starch. For example, Henan Jinrui's centrifuge sieve is usually equipped with 4-5 level sieve plates, which can achieve good separation effect.

- Coarse or damaged sieves: Allow fiber particles to pass into starch milk.

- Insufficient sieving stages: Single-stage sieving may not remove all fibers.

- High feed rate: Overloading sieves reduces separation efficiency.

Cassava starch extraction machine

Refining is the most important part of starch processing. Insufficient refining is one of the reasons caused excessive impurities in the cassava starch production. If refining is not thorough, impurities will remain in the starch, affecting the quality of the final product. Henan Jinrui suggest that starch processors employ an advanced hydrocyclone station with 18 stages for refining, which ensures the production of pure starch.

These are the main reasons caused excessive impurities in cassava starch. However, Henan Jinrui leverages advanced technology and machinery to effectively solve these problems and ensure high-quality cassava starch production. If you are interested in our starch processing machines, welcome to contact us!