Thermal characteristics of dried sugar beet pulp, leaves and leaf fractions obtained after extraction: fibrous leaf pulp and fibre rich leaf fraction, were investigated by differential scanning calorimetry and thermogravimetry. The sugar beet samples showed a similar thermal behaviour associated with a similar composition. Two endotherms are found on the differential scanning calorimetry curves. First one in the temperature range 31-153 °C and the second from 150-160 °C. Thermal degradation kinetics was studied by thermogravimetric analysis. Four degradation stages were observed within the temperature range 25-700 °C. The kinetic parameters of the degradation, obtained by Ortega and Friedman non-isothermal isoconversional methods did not significantly differ between models: Ea-activation energy at a conversion degree 0.1-0.9 ranged 50-200 kJ/mol; lnA- the natural logarithm of the pre-exponential factor 8-48; kp-thermal degradation rate constant at a conversion extent of 0.5 ranged of 0.19-2.55 min. Constant rate of degradation is highest for the sugar beet leaves kp (2.58-2.55 min), and kp (70.1-70.4 min). The results obtained are valuable for sugar beet leaf industrial processing. A positive environmental impact is achieved by transforming the waste into high-value food additives.
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