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Effects of Pulsed Electric Field on Yield Extraction and Quality of Olive Oil

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Abstract

The effect of the application of pulsed electric field (PEF) treatments of different intensities (0–2 kV/cm) on Arbequina olive paste in reference to olive oil extraction at different malaxation times (0, 15, and 30 min) and temperatures (15 and 26 °C) was investigated. The extraction yield improved by 54 % when the olive paste was treated with PEF (2 kV/cm) without malaxation. When the olive paste was malaxated at 26 °C, the application of a PEF treatment did not increase the extraction yield as compared with the control. However, at 15 °C, a PEF treatment of 2 kV/cm improved the extraction yield by 14.1 %, which corresponded with an enhancement of 1.7 kg of oil per 100 kg of olive fruits. The application of a PEF treatment could permit reduction of the malaxation temperature from 26 to 15 °C without impairing the extraction yield. Parameters legally established (acidity, peroxide value, K232, and K270) to measure the level of quality of the virgin olive oil were not affected by the PEF treatments. A sensory analysis revealed that the application of a PEF treatment did not generate any bad flavor or taste in the oil.

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Acknowledgments

M. Abenoza and M. Benito gratefully acknowledge the financial support that they obtained for their doctoral studies from the Department of Science, Technology and University of the Aragón Government.

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Authors and Affiliations

  1. Tecnología de los Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain

    M. Abenoza, M. Benito, G. Saldaña, I. Álvarez, J. Raso & A. C. Sánchez-Gimeno

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  1. M. Abenoza
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  2. M. Benito
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  3. G. Saldaña
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  4. I. Álvarez
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  5. J. Raso
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  6. A. C. Sánchez-Gimeno
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Correspondence to A. C. Sánchez-Gimeno.

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Abenoza, M., Benito, M., Saldaña, G. et al. Effects of Pulsed Electric Field on Yield Extraction and Quality of Olive Oil. Food Bioprocess Technol 6, 1367–1373 (2013). https://doi.org/10.1007/s11947-012-0817-6

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  • DOI: https://doi.org/10.1007/s11947-012-0817-6

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