Determination of the starch content of potatoes by the difference between dry weight and submerged weight

Determination of the starch content of potatoes by the difference between dry weight and submerged weight

Determining the starch content of the potatoes is very important for producing crispy, golden French fries. To do this, a certain amount (5kg) of potatoes is weighed into a special basket, then lowered under water and weighed again. Depending on the starch content, the buoyancy of the potatoes changes. The underwater weight can now be read on the scales. This weight can then be used to determine the starch content using a table. A high starch content in the potatoes ensures that the French fries fall apart easily. To avoid this, it makes sense to determine the starch content before processing.

A high starch content in potatoes is responsible for French fries falling apart easily. To get around this, the starch content of the potato is determined before further processing using a special weighing method, the difference between dry and underwater weight.