Testing the yield of a pilot-scale bubble column photobioreactor for cultivation of the microalga Rhodomonas salina as feed for intensive calanoid copepod cultures
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Testing the yield of a pilot-scale bubble column photobioreactor for cultivation of the microalga Rhodomonas salina as feed for intensive calanoid copepod cultures. / Vu, Minh Thi Thuy; Jepsen, Per Meyer; Jørgensen, Niels O.G.; Hansen, Benni Winding; Nielsen, Søren Laurentius.
I: Aquaculture Research, Bind 50, Nr. 1, 2019, s. 63-71.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - Testing the yield of a pilot-scale bubble column photobioreactor for cultivation of the microalga Rhodomonas salina as feed for intensive calanoid copepod cultures
AU - Vu, Minh Thi Thuy
AU - Jepsen, Per Meyer
AU - Jørgensen, Niels O.G.
AU - Hansen, Benni Winding
AU - Nielsen, Søren Laurentius
PY - 2019
Y1 - 2019
N2 - A dual column photobioreactor (PBR) (2 × 47 L) with mixed CO2/air bubbling was tested for cultivation of the microalga Rhodomonas salina as food for live feed copepods. In the continuous growth phase, the cell density was relatively stable at 2.40 ± 0.13 × 106 cells/ml at an average dilution rate of 0.46 ± 0.02 per day throughout the 30-day experiment. The produced algae had a high content of both total fatty acids (TFA) and free amino acids (FAA). Especially, the harvested algae contained a high proportion of poly-unsaturated fatty acids that made up 80% of the TFA and of essential amino acids (35% of all FAA), implicating desirable components as feed for copepods. The current PBR was sufficient to feed a culture of the calanoid copepod Acartia tonsa at a density of 2,500 adult/L in ca. 500 L culture with a daily yield of approximately 17 × 106 eggs. To be able to sustain the integrated copepods production, the suggested volume of the algae cultures should be ca. 20% of the copepod culture volume.
AB - A dual column photobioreactor (PBR) (2 × 47 L) with mixed CO2/air bubbling was tested for cultivation of the microalga Rhodomonas salina as food for live feed copepods. In the continuous growth phase, the cell density was relatively stable at 2.40 ± 0.13 × 106 cells/ml at an average dilution rate of 0.46 ± 0.02 per day throughout the 30-day experiment. The produced algae had a high content of both total fatty acids (TFA) and free amino acids (FAA). Especially, the harvested algae contained a high proportion of poly-unsaturated fatty acids that made up 80% of the TFA and of essential amino acids (35% of all FAA), implicating desirable components as feed for copepods. The current PBR was sufficient to feed a culture of the calanoid copepod Acartia tonsa at a density of 2,500 adult/L in ca. 500 L culture with a daily yield of approximately 17 × 106 eggs. To be able to sustain the integrated copepods production, the suggested volume of the algae cultures should be ca. 20% of the copepod culture volume.
KW - amino acids
KW - dilution rate
KW - fatty acids
KW - growth rate
KW - live feed
KW - upscaling
U2 - 10.1111/are.13868
DO - 10.1111/are.13868
M3 - Journal article
AN - SCOPUS:85055425854
VL - 50
SP - 63
EP - 71
JO - Aquaculture Research
JF - Aquaculture Research
SN - 1355-557X
IS - 1
ER -
ID: 204474556