Czech J. Food Sci., 2020, 38(6):404-409 | DOI: 10.17221/207/2020-CJFS

Relationship between the fat and oil composition and their initial oxidation rate during storageOriginal Paper

Monika Sabolová ORCID...*,1, Václav Zeman1, Gabriela Lebedová2, Marek Doležal2, Josef Soukup1, Zuzana Réblová2
1 Department of Microbiology, Nutrition and Dietetics, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
2 Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
3 8: 404-409.

Until now, the relationship between the fat and oil composition and their oxidation stability has been studied only at elevated temperatures (typically above 100 °C). Therefore, the initial oxidation rates of 19 edible fats and oils were determined as an increase in the peroxide value during storage in the dark at 35 °C with free access to air (oxygen). The initial oxidation rates of fats and oils were compared with parameters characterising these fats and oils (peroxide value, acid value, fatty acid composition, antioxidant capacity, and tocochromanol content). Using a simple correlation analysis, the initial oxidation rate correlated the most strongly with the peroxide value of the analysed fats and oils (P < 0.01). A highly reliable model (P < 0.0001) was obtained by multivariate statistical analysis. According to this model, the initial oxidation rate is affected mainly by the peroxide value and then by total trans fatty acid content, and antioxidant capacity.

Keywords: tocochromanols; antioxidant capacity; fatty acids; peroxide value; acid value

Published: December 31, 2020  Show citation

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Sabolová M, Zeman V, Lebedová G, Doležal M, Soukup J, Réblová Z. Relationship between the fat and oil composition and their initial oxidation rate during storage. Czech J. Food Sci. 2020;38(6):404-409. doi: 10.17221/207/2020-CJFS.
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