Malaxation of Olive Paste Under Sealed Conditions

  • Piernicola MasellaEmail author
  • Alessandro Parenti
  • Paolo Spugnoli
  • Luca Calamai
Original Paper


Virgin olive oils from pilot-scale malaxation under hermetically sealed conditions were compared with olive oils from industrial conventional open-to-air malaxation (control). Under sealed conditions, large CO2 emissions coupled with O2 depletion occur. Oil samples produced under sealed conditions were less oxidized and contained greater concentrations of antioxidant compounds (especially secoiridoids phenols) than the control. These results were attributed to the reduced O2 concentration in the hermetically sealed pilot-scale malaxer. The amounts and types of volatile compounds present in the oil were only slightly affected by the treatment.


Malaxation Carbon dioxide emission Phenolic compounds Volatile compounds 


  1. 1.
    Servili M, Selvaggini R, Esposto S, Taticchi A, Montedoro GF, Morozzi G (2004) Health and sensory properties of virgin olive oil hydrophilic phenols: agronomic and technological aspects of production that affect their occurrence in the oil. J Chromatogr A 1054:113–127Google Scholar
  2. 2.
    Angerosa F, Servili M, Selvaggini R, Taticchi A, Esposto S, Montedoro GF (2004) Volatile compounds in virgin olive oil: occurrence and their relationship with the quality. J Chromatogr A 1054:17–31Google Scholar
  3. 3.
    Servili M, Selvaggini R, Taticchi A, Esposto S, Montedoro GF (2003) Volatile compounds and phenolic composition of virgin olive oil: optimization of temperature and time of exposure of olive paste to air contact during the mechanical extraction process. J Agric Food Chem 51:7980–7988CrossRefGoogle Scholar
  4. 4.
    Servili M, Selvaggini R, Taticchi A, Esposto S, Montedoro GF (2003) Air exposure time of olive pastes during the extraction process and phenolic and volatile composition of virgin olive oil. J Am Oil Chem Soc 80:685–695CrossRefGoogle Scholar
  5. 5.
    Sanchez-ortiz A, Romero C, Perez AG, Sanz C (2008) Oxygen concentration affects volatile compound biosynthesis during virgin olive oil production. J Agric Food Chem 56:4681–4685CrossRefGoogle Scholar
  6. 6.
    Parenti A, Spugnoli P, Masella P, Calamai L (2006) Carbon dioxide emission from olive oil pastes during the transformation process: technological spin offs. Eur Food Res Technol 222:521–526CrossRefGoogle Scholar
  7. 7.
    Parenti A, Spugnoli P, Masella P, Calamai L (2007) Improving olive oil quality using CO2 evolved from olive pastes during processing. Eur J Lipid Sci Technol 109:1180–1185CrossRefGoogle Scholar
  8. 8.
    Off J Eur Communities (2003) European Commission Regulation EEC/1989/2003 of 6 November 2003 amending Regulation (EEC) No. 2568/91 on the characteristics of olive oil and olive pomace oil and on the relevant methods of analysis. L295:57–77Google Scholar
  9. 9.
    Mınguez-Mosquera MI, Rejano-Navarro L, Gandul-Rojas B, Sanchez-Gomez AH, Garrido-Fernandez J (1991) Color pigment correlation in virgin olive oils. J Am Oil Chem Soc 68:332–336CrossRefGoogle Scholar
  10. 10.
    Masella P, Parenti A, Spugnoli P, Calamai L (2009) Influence of vertical centrifugation on extra virgin olive oil quality. J Am Oil Chem Soc 86:1137–1140CrossRefGoogle Scholar
  11. 11.
    International Olive Oil Council (IOOC) (2006) SSOG Technical Commission—Sub-commission on vegetable oils. Determination of biophenols in olive oils by HPLC. Natural and oxidised oleuropein and ligstroside derivatives, lignans, flavonoids and phenolic acids. Method under public review RESOLUTION NO. RES-4/94-V/06Google Scholar
  12. 12.
    Servili M, Taticchi A, Esposto S, Urbani S, Selvaggini R, Montedoro GF (2008) Influence of the decrease in oxygen during malaxation of olive paste on the composition of volatiles and phenolics compounds in virgin olive oil. J Agric Food Chem 56:10048–10055CrossRefGoogle Scholar
  13. 13.
    Proietti P, Famiani F, Tombesi A (1999) Gas exchange in olive fruit. Photosynthetica 36:423–432CrossRefGoogle Scholar

Copyright information

© AOCS 2010

Authors and Affiliations

  • Piernicola Masella
    • 1
    Email author
  • Alessandro Parenti
    • 1
  • Paolo Spugnoli
    • 1
  • Luca Calamai
    • 2
    • 3
  1. 1.Dipartimento di Economia, Ingegneria, Scienze e Tecnologie Agrarie e Forestali, Facoltà di AgrariaUniversità degli Studi di FirenzeFlorenceItaly
  2. 2.Centro Interdipartimentale di Spettrometria di MassaUniversità degli Studi di Firenze, Polo ScientificoFlorenceItaly
  3. 3.Dipartimento di Scienze delle Produzioni Vegetali, del Suolo e dell’Ambiente Agroforestale, Facoltà di AgrariaUniversità degli Studi di FirenzeFlorenceItaly

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