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European Food Research and Technology

, Volume 242, Issue 10, pp 1709–1718 | Cite as

Composition of secoiridoid derivatives from Picual virgin olive oil using response surface methodology with regard to malaxation conditions, fruit ripening, and irrigation management

  • Antonia de Torres
  • Francisco Espínola
  • Manuel Moya
  • Eulogio Castro
Original Paper

Abstract

The malaxation conditions were studied in order to evaluate the composition of secoiridoid derivatives of Picual virgin olive oil using response surface methodology. Secoiridoid derivatives are the most abundant phenolic compounds in virgin olive oil: 3,4-DHPEA-EDA; 3,4-DHPEA-EA; p-HPEA-EDA; p-HPEA-EA. The temperature range studied was 20–60 °C, time 20–60 min, and the talc dosage 0.5–2.5 %. Also, fruit ripening and irrigation management were studied during one season in an orchard of Andalusia (Spain). The content of secoiridoid derivatives increases with increasing malaxation temperature of the olive paste. However, the content of secoiridoid derivatives from oleuropein (3,4-DHPEA-EDA and 3,4-DHPEA-EA) decreases with mixing time, while the content of secoiridoid derivatives from ligstroside (p-HPEA-EDA and p-HPEA-EA) increases. On the other hand, the secoiridoid derivatives from oleuropein increase with increasing maturity index while secoiridoid derivatives from ligstroside decrease in the range studied. Finally, the olive oils from olives cultivated without irrigation have more secoiridoid derivatives than olive oils from olives cultivated with irrigation.

Keywords

Virgin olive oil Secoiridoid derivatives Malaxation Talc Maturity Irrigation 

Notes

Acknowledgments

The authors are grateful to Estación de Olivicultura y Elaiotecnia, CIFA “Venta del Llano” in Jaén (Spain) for supplying olives.

Compliance with ethics 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 Berlin Heidelberg 2016

Authors and Affiliations

  • Antonia de Torres
    • 1
  • Francisco Espínola
    • 1
  • Manuel Moya
    • 1
  • Eulogio Castro
    • 1
  1. 1.Department of Chemical, Environmental and Materials EngineeringUniversity of JaénJaénSpain

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