Heterotrophic growth of Galdieria sulphuraria on residues from aquaculture and fish processing industries
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In: Bioresource Technology, Vol. 384, 129281, 01.09.2023.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Heterotrophic growth of Galdieria sulphuraria on residues from aquaculture and fish processing industries
AU - Pleissner, Daniel
AU - Schönfelder, Stephanie
AU - Händel, Nicole
AU - Dalichow, Julia
AU - Ettinger, Judith
AU - Kvangarsnes, Kristine
AU - Dauksas, Egidijus
AU - Rustad, Turid
AU - Cropotova, Janna
N1 - Publisher Copyright: © 2023 The Author(s)
PY - 2023/9/1
Y1 - 2023/9/1
N2 - 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.
AB - 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.
KW - Algal biomass
KW - Bioeconomy
KW - Bioprocess
KW - Fish processing
KW - Protein residues
KW - Biology
UR - http://www.scopus.com/inward/record.url?scp=85162136531&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/7240849a-eaf8-36c3-abab-ad03a7b3f62a/
U2 - 10.1016/j.biortech.2023.129281
DO - 10.1016/j.biortech.2023.129281
M3 - Journal articles
C2 - 37295476
AN - SCOPUS:85162136531
VL - 384
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
M1 - 129281
ER -