Abstract
Changes occurring in refined olive pomace oil (ROPO) blended with refined palm oil (RPO) during repeated frying cycles were monitored. Four ratios of ROPO/RPO blends were prepared: (100:0), (75:25), (50:50) and (25:75). The effect of deep-frying was studied by assessing the changes in iodine value, acid value, color value and fatty acids composition. The results show that the mixture ROPO/RPO (25:75) is the most stable compared with other blends. The fate of 3-MCPD and glycidyl esters during deep-frying was investigated showing no endogenous formation of the esters during 16 h of deep-frying.
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Abbreviations
- GE:
-
Glycidyl ester(s)
- 3-MCPD:
-
3-Monochloropropane-1,2-diol
- AV:
-
Acid value
- IV:
-
Iodine value
- ROPO:
-
Refined olive pomace oil
- RPO:
-
Refined palm oil
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Acknowledgements
The authors would like to thank the “Ministère de l’Enseignement Supérieur et de la Recherche Scientifique” (Laboratory LR14ES08), Tunisia, for its financial support to this research work.
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Ben Hammouda, I., Zribi, A., Ben Mansour, A. et al. Effect of deep-frying on 3-MCPD esters and glycidyl esters contents and quality control of refined olive pomace oil blended with refined palm oil. Eur Food Res Technol 243, 1219–1227 (2017). https://doi.org/10.1007/s00217-016-2836-4
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DOI: https://doi.org/10.1007/s00217-016-2836-4