Abstract
SummaryThe aim of this study was to determine the influence of pretreatment selection and washing processes of potatoes on the manual and optic control on the contents of nitrates (V), and glycoalkaloids after the peeling and frying processes are applied in the industrial production of potato chips. The highest reduction in nitrate quantity was found after the manual selection process of the potatoes and their slicing, as well as after frying the chips. The preselection process of the raw material, slicing and rinsing the potato slices, as well as frying the chips, had the largest influence on the losses of glycoalkaloids. In these samples, 74% remained after pretreatment of the raw material, 29% remained after slicing, and 10% remained in the chips after frying relative to the unpeeled potatoes.
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