European Food Research and Technology

, Volume 244, Issue 4, pp 747–755 | Cite as

Comparison of OXITEST and RANCIMAT methods to evaluate the oxidative stability in frying oils

  • Federica Tinello
  • Anna Lante
  • Michele Bernardi
  • Francesca Cappiello
  • Fernanda Galgano
  • Marisa Carmela Caruso
  • Fabio Favati
Original Paper
  • 167 Downloads

Abstract

The oxidation of fatty acids in the presence of atmospheric oxygen is recognized as one of the main factors affecting the shelf life of oils and fats causing rancidity by the formation of off-flavors due to aliphatic aldehydes or other volatile compounds. Therefore, the oxidative stability is one of the most important parameters to be evaluated in the formulation of commercial frying oils. In this regard, the induction period of 15 frying oils has been measured using two different methods of accelerated oxidation, OXITEST and RANCIMAT, and correlated to their fatty acid content previously detected by gas chromatographic technique. Frying oils containing high contents of saturated fatty acids mainly from the palm oil achieved an improved oxidative stability by increasing their induction period. Moreover, the linear regression analysis showed a good correlation between the induction period values of the two instruments. Hence, the innovative OXITEST method may be an easy, fast, and eco-friendly alternative to the official RANCIMAT method for evaluating the oxidative stability in oil- and fat-containing products.

Keywords

Oxidative stability Induction period RANCIMAT OXITEST Frying oils Fatty acids 

Notes

Acknowledgements

The authors would like to thank VELP Scientifica (Usmate, MB, Italy) for lending the OXITEST instrument and Dr. Paola Ornaghi for technical assistance.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Compliance with ethics requirements

This article does not contain any studies with human or animal subjects.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Agronomy, Food, Natural Resources, Animals, and Environment-DAFNAE, AgripolisUniversity of PadovaLegnaroItaly
  2. 2.Department of BiotechnologyUniversity of VeronaVeronaItaly
  3. 3.School of Agricultural, Forestry, Food and Environmental SciencesUniversity of BasilicataPotenzaItaly

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