Investigation of biomass and lipids production with Neochloris oleoabundans in photobioreactor
The fresh water microalga Neochloris oleoabundans was investigated for its ability to accumulate lipids and especially triacylglycerols (TAG). A systematic study was conducted, from the determination of the growth medium to its characterization in an airlift photobioreactor. Without nutrient limitat...
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Veröffentlicht in: | Bioresource technology 2009-12, Vol.100 (23), p.5988-5995 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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Zusammenfassung: | The fresh water microalga
Neochloris
oleoabundans was investigated for its ability to accumulate lipids and especially triacylglycerols (TAG). A systematic study was conducted, from the determination of the growth medium to its characterization in an airlift photobioreactor. Without nutrient limitation, a maximal biomass areal productivity of 16.5
g
m
−2
day
−1 was found. Effects of nitrogen starvation to induce lipids accumulation was next investigated. Due to initial
N.
oleoabundans total lipids high content (23% of dry weight), highest productivity was obtained without mineral limitation with a maximal total lipids productivity of 3.8
g
m
−2
day
−1. Regarding TAG, an almost similar productivity was found whatever the protocol was: continuous production without mineral limitation (0.5
g
m
−2
day
−1) or batch production with either sudden or progressive nitrogen deprivation (0.7
g
m
−2
day
−1). The decrease in growth rate reduces the benefit of the important lipids and TAG accumulation as obtained in nitrogen starvation (37% and 18% of dry weight, respectively). |
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ISSN: | 0960-8524 1873-2976 |
DOI: | 10.1016/j.biortech.2009.06.004 |