engleski

Possibility of using potato starch as a by-product from chips production

The market for snack products, especially those containing potatoes in some form, is constantly growing, despite the general perception that they are high in calories but low in nutritional value. Nevertheless, there are numerous studies aimed at increasing the nutritional value of this group of products, but also at improving the existing production processes in order to reuse the by- products generated during production, which are often not properly valorized. One of these by- products is potato starch, which remains in the water used in the first phase of the technological process of potato chip production, the so-called "green line", in which the washing and peeling of the potatoes and the slicing of the potatoes take place. The wastewater that remains after washing the potato slices is rich in starch and therefore has a high organic load. Therefore, it must be treated before it is discharged into the sewer system or the environment. However, the starch contained in the wastewater has the potential for further use if it is successfully separated from the wastewater, while the treated wastewater can be reused in the production process as process water, for example for rinsing the peeled tubers. This work gives an overview of the processes for separating starch from wastewater and the possibility of further use of the recovered starch, such as the production of modified starch for further use in the food industry, as a thickener in gastronomy, as a filler in pharmaceuticals, as a nutrient for bacteria in the production of compost, for the production of starch glue, for the production of ethanol, in biogas plants for the production of heat or electricity, and others.

potato starch ; starch separation ; by-product from potato chips production

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