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Waste and Biomass Valorization

, Volume 4, Issue 3, pp 529–537 | Cite as

Utilisation of By-Products from Sunflower-Based Biodiesel Production Processes for the Production of Fermentation Feedstock

  • Vasiliki Kachrimanidou
  • Nikolaos Kopsahelis
  • Afroditi Chatzifragkou
  • Seraphim Papanikolaou
  • Stavrianos Yanniotis
  • Ioannis Kookos
  • Apostolis A. Koutinas
Original Paper

Abstract

By-products streams from a sunflower-based biodiesel plant were utilised for the production of fermentation media that can be used for the production of polyhydroxyalkanoates (PHA). Sunflower meal was utilised as substrate for the production of crude enzyme consortia through solid state fermentation (SSF) with the fungal strain Aspergillus oryzae. Fermented solids were subsequently mixed with unprocessed sunflower meal aiming at the production of a nutrient-rich fermentation feedstock. The highest free amino nitrogen (FAN) and inorganic phosphorus concentrations achieved were 1.5 g L−1 and 246 mg L−1, respectively, when an initial proteolytic activity of 6.4 U mL−1 was used. The FAN concentration was increased to 2.3 g L−1 when the initial proteolytic activity was increased to 16 U mL−1. Sunflower meal hydrolysates were mixed with crude glycerol to provide fermentation media that were evaluated for the production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P(3HB-co-3HV)) using Cupriavidus necator DSM 545. The P(3HB-co-3HV) (9.9 g l−1) produced contained 3HB and 3HV units with 97 and 3 mol %, respectively. Integrating PHA production in existing 1st generation biodiesel production plants through valorisation of by-product streams could improve their sustainability.

Keywords

Sunflower meal Crude glycerol Enzymatic bioconversion Aspergillus oryzae Solid state fermentation Polyhydroxyalkanoates 

Notes

Acknowledgments

This work is part of the “BIOREF” project (09SYN-81-715), implemented within the National Strategic Reference Framework (NSRF) 2007–2013 and co-financed by National (Greek Ministry—General Secretariat of Research and Technology) and Community Funds (E.U.-European Social Fund).

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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Vasiliki Kachrimanidou
    • 1
  • Nikolaos Kopsahelis
    • 1
  • Afroditi Chatzifragkou
    • 1
  • Seraphim Papanikolaou
    • 1
  • Stavrianos Yanniotis
    • 1
  • Ioannis Kookos
    • 2
  • Apostolis A. Koutinas
    • 1
  1. 1.Department of Food Science and TechnologyAgricultural University of AthensAthensGreece
  2. 2.Department of Chemical EngineeringUniversity of PatrasRio PatrasGreece

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