Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions

Jorijn H. Janssen; Jasper L.S.P. Driessen; Packo P. Lamers; René H. Wijffels; Maria J. Barbosa

doi:10.1016/j.algal.2018.10.002

Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions

Jorijn H. Janssen^*, Jasper L.S.P. Driessen, Packo P. Lamers, René H. Wijffels, Maria J. Barbosa

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

18 Citations (Scopus)

Abstract

Triacylglycerol (TAG) accumulation in the microalgae Nannochloropsis gaditana is induced by nitrogen starvation and dependent on the light supplied. We studied under simulated outdoor light conditions the effect of supplied light on the TAG yield by varying the biomass-specific photon supply rate present at the onset of nitrogen starvation. High, intermediate and low average biomass-specific photon supply rates (26, 11 and 6 μmol g⁻¹ s⁻¹) were achieved by applying equal incident light intensity to different biomass concentrations (1.2, 2.9 and 5.4 g L⁻¹). The intermediate biomass-specific photon supply rate resulted in the highest time-averaged TAG yield on light; 0.09 g_TAG mol_ph ⁻¹. Sub-optimal yields were attributed to photosaturation, photoinhibition, light falling through reactor without being absorbed and high maintenance requirements. The biomass-specific photon supply rate is important to optimize TAG production by microalgae.

Original language	English
Pages (from-to)	595-601
Number of pages	7
Journal	Algal Research
Volume	35
DOIs	https://doi.org/10.1016/j.algal.2018.10.002
Publication status	Published - Nov 2018

Keywords

Biomass-specific photon supply rate
Initial biomass concentration
Nannochloropsis gaditana
Nitrogen starvation
Triacylglycerol

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10.1016/j.algal.2018.10.002Licence: CC BY-NC-ND

https://edepot.wur.nl/462415Licence: CC BY-NC-ND

MIRACLES: Multi-product Integrated bioRefinery of Algae: from Carbon dioxide and Light Energy to high-value Specialties
1/11/13 → 31/10/17
Project: EU research project

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@article{f2e7ce693587449085320820402c0bc2,

title = "Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions",

abstract = "Triacylglycerol (TAG) accumulation in the microalgae Nannochloropsis gaditana is induced by nitrogen starvation and dependent on the light supplied. We studied under simulated outdoor light conditions the effect of supplied light on the TAG yield by varying the biomass-specific photon supply rate present at the onset of nitrogen starvation. High, intermediate and low average biomass-specific photon supply rates (26, 11 and 6 μmol g−1 s−1) were achieved by applying equal incident light intensity to different biomass concentrations (1.2, 2.9 and 5.4 g L−1). The intermediate biomass-specific photon supply rate resulted in the highest time-averaged TAG yield on light; 0.09 gTAG molph −1. Sub-optimal yields were attributed to photosaturation, photoinhibition, light falling through reactor without being absorbed and high maintenance requirements. The biomass-specific photon supply rate is important to optimize TAG production by microalgae.",

keywords = "Biomass-specific photon supply rate, Initial biomass concentration, Nannochloropsis gaditana, Nitrogen starvation, Triacylglycerol",

author = "Janssen, {Jorijn H.} and Driessen, {Jasper L.S.P.} and Lamers, {Packo P.} and Wijffels, {Ren{\'e} H.} and Barbosa, {Maria J.}",

year = "2018",

month = nov,

doi = "10.1016/j.algal.2018.10.002",

language = "English",

volume = "35",

pages = "595--601",

journal = "Algal Research",

issn = "2211-9264",

publisher = "Elsevier",

}

Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions. / Janssen, Jorijn H.; Driessen, Jasper L.S.P.; Lamers, Packo P. et al.
In: Algal Research, Vol. 35, 11.2018, p. 595-601.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions

AU - Janssen, Jorijn H.

AU - Driessen, Jasper L.S.P.

AU - Lamers, Packo P.

AU - Wijffels, René H.

AU - Barbosa, Maria J.

PY - 2018/11

Y1 - 2018/11

N2 - Triacylglycerol (TAG) accumulation in the microalgae Nannochloropsis gaditana is induced by nitrogen starvation and dependent on the light supplied. We studied under simulated outdoor light conditions the effect of supplied light on the TAG yield by varying the biomass-specific photon supply rate present at the onset of nitrogen starvation. High, intermediate and low average biomass-specific photon supply rates (26, 11 and 6 μmol g−1 s−1) were achieved by applying equal incident light intensity to different biomass concentrations (1.2, 2.9 and 5.4 g L−1). The intermediate biomass-specific photon supply rate resulted in the highest time-averaged TAG yield on light; 0.09 gTAG molph −1. Sub-optimal yields were attributed to photosaturation, photoinhibition, light falling through reactor without being absorbed and high maintenance requirements. The biomass-specific photon supply rate is important to optimize TAG production by microalgae.

AB - Triacylglycerol (TAG) accumulation in the microalgae Nannochloropsis gaditana is induced by nitrogen starvation and dependent on the light supplied. We studied under simulated outdoor light conditions the effect of supplied light on the TAG yield by varying the biomass-specific photon supply rate present at the onset of nitrogen starvation. High, intermediate and low average biomass-specific photon supply rates (26, 11 and 6 μmol g−1 s−1) were achieved by applying equal incident light intensity to different biomass concentrations (1.2, 2.9 and 5.4 g L−1). The intermediate biomass-specific photon supply rate resulted in the highest time-averaged TAG yield on light; 0.09 gTAG molph −1. Sub-optimal yields were attributed to photosaturation, photoinhibition, light falling through reactor without being absorbed and high maintenance requirements. The biomass-specific photon supply rate is important to optimize TAG production by microalgae.

KW - Biomass-specific photon supply rate

KW - Initial biomass concentration

KW - Nannochloropsis gaditana

KW - Nitrogen starvation

KW - Triacylglycerol

U2 - 10.1016/j.algal.2018.10.002

DO - 10.1016/j.algal.2018.10.002

M3 - Article

AN - SCOPUS:85054454364

SN - 2211-9264

VL - 35

SP - 595

EP - 601

JO - Algal Research

JF - Algal Research

ER -

Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions

Abstract

Keywords

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MIRACLES: Multi-product Integrated bioRefinery of Algae: from Carbon dioxide and Light Energy to high-value Specialties

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