Frontiers in Nutrition (Nov 2022)

Pulsed electric field increases the extraction yield of extra virgin olive oil without loss of its biological properties

  • Roberto Martínez-Beamonte,
  • Roberto Martínez-Beamonte,
  • Roberto Martínez-Beamonte,
  • Marina Ripalda,
  • Tania Herrero-Continente,
  • Cristina Barranquero,
  • Cristina Barranquero,
  • Cristina Barranquero,
  • Alberto Dávalos,
  • María Carmen López de las Hazas,
  • Ignacio Álvarez-Lanzarote,
  • Ignacio Álvarez-Lanzarote,
  • Ana Cristina Sánchez-Gimeno,
  • Ana Cristina Sánchez-Gimeno,
  • Javier Raso,
  • Javier Raso,
  • Carmen Arnal,
  • Carmen Arnal,
  • Joaquín C. Surra,
  • Joaquín C. Surra,
  • Joaquín C. Surra,
  • Jesús Osada,
  • Jesús Osada,
  • Jesús Osada,
  • María A. Navarro,
  • María A. Navarro,
  • María A. Navarro

DOI
https://doi.org/10.3389/fnut.2022.1065543
Journal volume & issue
Vol. 9

Abstract

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IntroductionPulsed electric field (PEF) has been used for improving extraction of extra virgin olive oil (EVOO). However, the biological changes induced by the consumption of pulsed electric field-obtained extra virgin olive oil (PEFEVOO) have not been studied yet.Materials and methodsEVOO oils from Empeltre variety were prepared by standard (STD) cold pressure method involving crushing of the olives, malaxation and decanting and by this procedure including an additional step of PEF treatment. Chemical analyses of EVOO oils were done. Male and female Apoe-deficient mice received diets differing in both EVOOs for 12 weeks, and their plasma, aortas and livers were analyzed.ResultsPEF application resulted in a 17% increase in the oil yield and minimal changes in chemical composition regarding phytosterols, phenolic compounds and microRNA. Only in females mice consuming PEF EVOO, a decreased plasma total cholesterol was observed, without significant changes in atherosclerosis and liver steatosis.ConclusionPEF technology applied to EVOO extraction maintains the EVOO quality and improves the oil yield. The equivalent biological effects in atherosclerosis and fatty liver disease of PEF-obtained EVOO further support its safe use as a food.

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