Comparison Between Static and Dynamic Analyses of the Solid Fat Content of Coconut Oil

Authors

  • Vinod Dhaygude
  • Anita Soós
  • Ildikó Zeke
  • László Somogyi

DOI:

https://doi.org/10.1515/hjic-2018-0015

Keywords:

solid fat content, solid fat index, pNMR, DSC, Coconut oil

Abstract

The objective of this work was to compare the physical and thermal characteristics of two coconut oils and their blends which were observed by the results of differential scanning calorimetry (DSC) and pulsed nuclear magnetic resonance (pNMR). Fat blends composed of different ratios (fully hydrogenated coconut oil / non-hydrogenated coconut oil: 25/75, 50/50 and 75/25) were prepared and examined for solid fat content. The solid fat content of samples was determined as a function of temperature by pNMR. The DSC technique determines the solid fat index by measuring the heat of fusion successively at different temperatures. DSC calculates the actual content of solids in fat samples and how it changes throughout the duration of heating or cooling. A characteristic curve is constructed by the correlation of enthalpies. Based on our results, it is clear that both DSC and pNMR techniques provide very practical and useful information on the solid fat content of fats. DSC is dynamic and pNMR is static. A difference in the values of the solid fat indexes of samples was observed which may be due to a fundamental difference between the two techniques. These data can be used by food manufacturers to optimize processing conditions for modified coconut oil and food products fortified with coconut oil.

Author Biographies

  • Vinod Dhaygude
    Department of Grain and Industrial Plant Technology, Szent István University, Villányi út 29--43, Budapest, 1118, HUNGARY
  • Anita Soós
    Department of Grain and Industrial Plant Technology, Szent István University, Villányi út 29--43, Budapest, 1118, HUNGARY
  • Ildikó Zeke
    Department of Refrigeration and Livestock Products Technology, Szent István University, Ménesi út 43-45, Budapest, 1118, HUNGARY
  • László Somogyi
    Department of Grain and Industrial Plant Technology, Szent István University, Villányi út 29--43, Budapest, 1118, HUNGARY

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Published

2018-12-07

How to Cite

Comparison Between Static and Dynamic Analyses of the Solid Fat Content of Coconut Oil . (2018). Hungarian Journal of Industry and Chemistry, 46(2), 33-36. https://doi.org/10.1515/hjic-2018-0015