Starch extracting process needs a lot of water. Raw material cleaning, grinding and each separating process all are all processed in water. Insoluble in water and the “proportion of starch is higher than water and other impurities” are the two main basics for starch processing plant.
Generally, Starch extracting can be divided into the following processes:
The starch flour processing technology is different according to different raw materials.
Tuberous Crop: Potato, Sweet Potato, Cassava…
Grain: Maize/Corn, Wheat, Rice, Sorghum, Mung beans, peas, broad bean…
The starch extracting process of tuberous crop isgrinding and extracting directly (need no steeping), which is relatively simple and producing less by-products. Cereal starch extraction is complex, including steeping, degerminating, by-products recovery and so on. But the starch equipment is generally universal and many processing section is the same.
Starch Crops | Starch Content |
---|---|
Sweet Potato | 10%~30% |
Potato | 10%~30% |
Cassava | 10%~30% |
Corn Maize | 50%~60% |
Sorghum | 65%~75% |
Wheat | 60%~80% |
Rice | 70%~78% |
Beans | 40~60% |
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