Heterotrophic growth of Galdieria sulphuraria on residues from aquaculture and fish processing industries

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

  • Daniel Pleissner
  • Stephanie Schönfelder
  • Nicole Händel
  • Julia Dalichow
  • Judith Ettinger
  • Kristine Kvangarsnes
  • Egidijus Dauksas
  • Turid Rustad
  • Janna Cropotova

The study aimed at zero-waste utilization of fish processing streams for cultivation of microalgae Galdieria sulphuraria. Wastewater from a fish processing facility, slam (mix of used fish feed and faeces), and dried pellet (sediments after enzymatic hydrolysis of rainbow trout) were investigated as potential sources of carbon, nitrogen, and phosphate for cultivation of G. sulphuraria. The pellet extract was found to support the growth of G. sulphuraria when appropriate diluted, at concentrations below 40 % (v/v). It was revealed that wastewater does not impact the growth negatively, however free amino nitrogen and carbon sources need to be supplied from another source. Therefore, only proteolyzed pellet extract (20 %, v/v) was selected for upscaling and a biomass concentration of 80 g L−1 (growth rate was 0.72 day−1) was achieved in a non-sterile fed-batch culture. Even though biomass was produced under non-sterile conditions no pathogens such as Salmonella sp. could be detected.

OriginalspracheEnglisch
Aufsatznummer129281
ZeitschriftBioresource Technology
Jahrgang384
Anzahl der Seiten8
ISSN0960-8524
DOIs
PublikationsstatusErschienen - 01.09.2023

Bibliographische Notiz

Funding Information:
This work was financially supported by the German Federal Ministry of Food and Agriculture /BMEL) through the Federal Office for Agriculture and Food /BLE), grant number 2821ERA12C. This project has received funding from the European Union’s Horizon 2020 research and innovation program under the grant agreement No 862555. Janna Cropotova acknowledges the FOSC-ERA project “CLIMAQUA”, (grant No. 327695 of BIONÆR-Bionæringsprogram) for support.

Funding Information:
This work was financially supported by the German Federal Ministry of Food and Agriculture /BMEL) through the Federal Office for Agriculture and Food /BLE), grant number 2821ERA12C. This project has received funding from the European Union's Horizon 2020 research and innovation program under the grant agreement No 862555. Janna Cropotova acknowledges the FOSC-ERA project “CLIMAQUA”, (grant No. 327695 of BIONÆR-Bionæringsprogram) for support.

Publisher Copyright:
© 2023 The Author(s)

DOI

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