In sweet potato starch processing, raw materials have a great influence on starch extraction rate.

The main factors include variety, stacking period and raw material quality.

 

(I) Variety: The starch content of high-starch special varieties is generally 22%-26%, while the starch content of edible and starch-use varieties is 18%-22%, and the starch content of edible and feed varieties is only 10%-20%.

Therefore, it is necessary to choose varieties with high starch rate. It is best to establish a sweet potato raw material production base. The enterprise signs a contract with the base to implement unified varieties and unified standardized cultivation, and the enterprise purchases the products.

(II) Stacking period: The starch rate of potato pieces is the highest when they are just harvested. The longer the stacking time, the greater the proportion of starch converted into sugar, and the lower the flour yield.

If you want to store more fresh potatoes during the sweet potato harvest season for delayed processing, you should pay attention to 3 points: First, choose anti-saccharification sweet potato varieties; second, control the purchase of raw materials to ensure quality; third, ensure that the warehouse has a suitable temperature to minimize the rot rate during storage.

(III) Raw material quality: In the fresh potato raw materials, if the proportion of potato tubers affected by pests, water damage, and frost damage is too large, there is too much soil on the potato tubers, there are too many diseased potato tubers, insect-infested potato tubers, and mixed soil and stone impurities in the potato dry materials, and the moisture content is too high, the flour yield will be reduced.

Therefore, in the production process of sweet potato raw materials, attention should be paid to ensuring and improving product quality, and strict quality control should be carried out during the acquisition.

 

 

Zhengzhou Jinghua Industrial Co., Ltd. has been committed to the research and development, manufacturing and sales of starch deep processing equipment for decades. Its main products include sweet potato starch, cassava starch, potato starch, corn starch, wheat starch equipment, etc.