Potato tubers qualitative evaluation as a raw material for food products of the population

The purpose of the study: qualitative assessment of potato tubers of different ripening periods as raw materials for food. The objective are: to identify the reasons for growing potato varieties with early ripening in the Siberian Region, to highlight the main indicators of the quality of potato tubers and the effect on them of the ripening time of potato tubers, to give qualitative characteristics of potato tubers as raw materials for food. Two-way analysis of variance was used for statistical processing of the research results. It shows the influence of qualitative variables (factors) on one dependent quantitative variable. According to the results of statistical processing, a linear relationship was revealed between the qualitative characteristics of potato tubers of early maturing varieties and varietal differences. Studies have shown that the climatic features of the south of the Siberian Region make it possible to grow mainly potato varieties with early (early maturing, mid-early) ripening periods. The content of dry matter and starch are the main indicators of the quality of potato tubers. Depending on the ripening period, an increase in these indicators is observed in potato tubers with later ripening periods: medium early ((Meshchera Krasa, Lilya)) and medium late (Tuleyevsky). The content of ascorbic acid, which is a biologically active substance, increases in proportion to the ripening periods of potato varieties and reaches a maximum value in the tubers of the medium late potato variety Tuleyevsky, which has the best quality characteristics of potato tubers, as well as the safety of the marketable type under standard storage conditions in a potato storage (up to 90 % ).