M.I. Egorova, L.N. Puzanova, I.S. Mikhaleva, Ya.A. Kretova
Federal Agricultural Kursk Research Center, ul. Karla Marksa, 70 b, Kursk, 305021, Russian Federation
Abstract. TChanges in food production technologies lead to the emergence of new requirements for white sugar used in their manufacture, since only the exact correspondence of its quality to the needs of a particular production allows producing a high-quality food product with minimal costs. One of the indicators that determine the raw material value of white sugar is the lack of the floccule-forming ability of its solutions upon acidification. The purpose of the study was to determine the actual floccule-forming ability of white sugar produced in Russia. The objects of the study were 137 samples of white sugar of categories extra, TS1, and TS2 (according to GOST 33222-2015), produced in 2016–2020 at 58 Russian enterprises. In the samples, we determined the floccule-forming ability and additional characteristics such as colour in solution, ash content, turbidity of the solution, calcium content, and pH value. The floccule-forming ability was absent in sugar samples of the extra and TS1 categories, as well as in 67% of the samples of TS2 category. Low floccule-forming ability was noted in 23 samples of TS2 category; medium floccule-forming ability was noted in 6 samples; high floccule-forming ability was noted in 4 samples. A strong correlation was established between the ash content and colour in solution for all groups of white sugar of TS2 category, as well as between turbidity and calcium content for sugar without flocculating ability; moderate and weak correlations were established for sugar showing such ability; a moderate correlation was established between turbidity and ash content for all groups. As the floccule-forming ability of sugar increased, the relationship between pH and turbidity increased from weak to very strong. Boundary indicators of the characteristics of white sugar, at exceeding of which the manifestation of floccule-forming ability are possible, are: chromaticity in solution is above 100 ICUMSA units; turbidity of the solution is more than 30 ICUMSA units; ash content is above 0.025%; calcium content is above 40 mg/kg; pH is above 7.3.
Keywords: white sugar; floccule-forming ability; micronutrient; colour; turbidity; ash; correlation.
Author Details: M. I. Egorova, Cand. Sc. (Tech.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); L. N. Puzanova, Cand. Sc. (Agr.), deputy director; I. S. Mikhaleva, senior research fellow; Ya. A. Kretova, research fellow.
For citation: MI Egorova, LN Puzanova, IS Mikhaleva, et al. [Results of monitoring the floccule-forming ability of white sugar solutions] Dostizheniya nayki i tekniki APK. 2021; 35(3):67-72. Russian. doi: 10.24411/0235-2451-2021-10312.