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

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

Determining the starch content of the potatoes is very important for the production of crispy, golden-yellow chips. To do this, a certain amount (5kg) of potatoes is weighed into a special basket, then submerged under water and weighed again. Depending on the starch content, the buoyancy of the potatoes changes. The underwater weight can now be read off the scales. With this weight, the starch content can then be read from a table. A high starch content in the potatoes ensures that the chips break down easily. To avoid this, it makes sense to determine the starch content before processing.

A high starch content in the potatoes is responsible for the fact that chips break down easily. To avoid this, the starch content of the potato is determined before further processing using a special weighing method, the difference between dry and underwater weight