Sweet potatoes are going to be harvested in a period of time, and the manufacturers processing sweet potato starch also need to be prepared to purchase and process them. What should we pay attention to? Let me take you to have a look.
Sweet potato with high starch content is the best choice if selected for processing starch. The following points should be paid attention to when purchasing sweet potatoes:
1. Choose healthy potato lumps
The sweet potato with disease is not suitable to be used as raw material for processing starch , and it will infect other potato lumps during storage. When sweet potato is on the market, it is necessary to purchase fresh potatoes without damage, spots caused by insects and mildew, and freeze injury.
2. Choose potato lumps of the similar size and shape
The lighter sweet potato contains more sugar, water and soluble substances, and the weightier sweet potato contains more starch. Therefore, sweet potato with the similar size and shape but more weight should be selected for starch production
3. Avoid purchasing sweet potatoes after hoarding
During the storage of the harvested potatoes, starch is continuously converted into sugar. Respiration makes some of the sugar lose through making it combine with oxygen to produce carbon dioxide and water; the other sugar is accumulated in the potato lumps. We should try our best to avoid selecting the preserved sweet potatoes when buying. Moreover, the harvested sweet potatoes should be processed as soon as possible.
4. Pick up sweet potatoes with white and yellow skin
The starch produced by the sweet potato with white skin and yellow skin is usually better than those produced by the sweet potato with red skin in color, viscosity and yield.
The starch content of sweet potato can be checked by observation. When the sweet potato is broken, if there is much white pulp and moisture in the cross section, the starch content of the inspected sweet potato is high; otherwise, it is low.
That's all for sharing about the purchase and selection of fresh potatoes for processing starch. If you are new to investing in starch processing, you have to pay more attention to the selection of processing equipment, and choose the processing equipment suitable for yourself.