Applied Biochemistry and Biotechnology

, Volume 98, Issue 1, pp 717–732

Ethanol production from olive oil extraction residue pretreated with hot water

Authors

  • Ignacio Ballesteros
    • Renewable Energies DepartmentCentro De Investigaciones Energéticas Medioambientales Y Technológicas, (CIEMAT)
  • José Miguel Oliva
    • Renewable Energies DepartmentCentro De Investigaciones Energéticas Medioambientales Y Technológicas, (CIEMAT)
  • Maria José Negro
    • Renewable Energies DepartmentCentro De Investigaciones Energéticas Medioambientales Y Technológicas, (CIEMAT)
  • Paloma Manzanares
    • Renewable Energies DepartmentCentro De Investigaciones Energéticas Medioambientales Y Technológicas, (CIEMAT)
    • Renewable Energies DepartmentCentro De Investigaciones Energéticas Medioambientales Y Technológicas, (CIEMAT)
Article

DOI: 10.1385/ABAB:98-100:1-9:717

Cite this article as:
Ballesteros, I., Oliva, J.M., Negro, M.J. et al. Appl Biochem Biotechnol (2002) 98: 717. doi:10.1385/ABAB:98-100:1-9:717

Abstract

The olive pulp fraction contained in the residue generated in olive oil extraction by a two-step centrifugation process can be upgraded by using the cellulose fraction to produce ethanol and recovering high value phenols (tyrosol and hydroxytyrosol). Olive pulp was pretreated in a laboratory scale stirred autoclave at different temperatures (150–250°C). Pretreatment was evaluated regarding cellulose recovery, enzymatic hydrolysis effectiveness ethanol production by a simultaneous saccharification and fermentation process (SSF), and phenols recovery in the filtrate. The pretreatment of olive pulp using water at temperatures between 200°C and 250°C enhanced enzymatic hydrolysis. Maximum ethanol production (11.9 g/L) was obtained after pretreating pulp at 210°C in a SSF fed-batch procedure. Maximum hydroxytyrosol recovery was obtained in the liquid fraction when pretreated at 230°C.

Index Entries

Olive oil extraction by-productspretreatmentsimultaneous saccharification and fermentationethanolhydroxytyrosol

Copyright information

© Humana Press Inc. 2002