Journal of the American Oil Chemists’ Society

, Volume 73, Issue 9, pp 1121–1125

Ethanol extraction of polyphenols in an immersion extractor. Effect of pulsing flow

  • J. Sineiro
  • H. Domínguez
  • M. J. Núñez
  • J. M. Lema
Article

Abstract

A comparative study on polyphenol extraction from sunflower press cake in a semicontinuous pulsed-flow immersion extractor and in a conventional laboratory immersion extractor was developed. The solvent was 96% (vol/vol) ethanol. No difference in the residual polyphenol content in the cake was observed at short times, but after 10 h, the pulsed extractor showed a higher polyphenol concentration in the outlet miscella. In addition, the effective diffusivity of polyphenols in sunflower press cake was estimated.

Key Words

Diffusivity extraction polyphenols pulsed extractor 

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Copyright information

© AOCS Press 1996

Authors and Affiliations

  • J. Sineiro
    • 1
  • H. Domínguez
    • 1
  • M. J. Núñez
    • 1
  • J. M. Lema
    • 1
  1. 1.Department of Chemical EngineeringUniversity of Santiago de CompostelaSantiago de CompostelaSpain

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