Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 542113
Title Effect of initial biomass-specific photon supply rate on fatty acid accumulation in nitrogen depleted Nannochloropsis gaditana under simulated outdoor light conditions
Author(s) Janssen, Jorijn H.; Driessen, Jasper L.S.P.; Lamers, Packo P.; Wijffels, René H.; Barbosa, Maria J.
Source Algal Research 35 (2018). - ISSN 2211-9264 - p. 595 - 601.
DOI https://doi.org/10.1016/j.algal.2018.10.002
Department(s) Bioprocess Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Biomass-specific photon supply rate - Initial biomass concentration - Nannochloropsis gaditana - Nitrogen starvation - Triacylglycerol
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.

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