Investigating the temperature dependence of refined sunflower oil specific heat capacity on its composition by the method of differential scanning calorimetry

DOI: 10.17586/1606-4313-2019-18-1-52-63
UDC 536.1/.62/.63; 665.1/.3

Investigating the temperature dependence of refined sunflower oil specific heat capacity on its composition by the method of differential scanning calorimetry

Fedorov A.V. , Baranov I.V., Tambulatova E.V., Volkov Sergey M., Prokhorova L.T., Krylov V. А.

For citation: Fedorov A.V., Baranov I.V., Tambulatova E.V., Volkov S.M., Prokhorova L.T., Krylov V.A. Investigation of the temperature dependence of the specific heat capacity of the refined sunflower oils from their composition by the method of differential scanning kalorimetry. Vestnik Mezhdunarodnoi akademii kholoda. 2019. No 1. p.

Abstract
The article deals with the analysis of changes in specific heat capacity of refined sunflower oils in the temperature range of from 10 to 150оСby the method of differential scanning calorimetry. The research is carried out according to the program of cooking oils system research. The empirical dependencies of specific heat capacity on temperature for different oils are presented. The comparative analysis of fatty-acid profile of low and high oleic sunflower oils, as well as the data on tocopherol, steroids, and wax concentration, proves that reducing specific heat capacity of low oleic type by 3%, compared to specific heat capacity of high oleic, is due to increasing concentration of linoleic acid in low oleic sunflower oil.

Keywords: thermophysical properties, specific heat capacity, cooking oils, model of vegetable oil liquid phase.


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