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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 442740
Title Biomass and lipid productivity of Neochloris oleoabundans under alkaline–saline conditions
Author(s) Severino R Quintanilha Santos, A.M.; Lamers, P.P.; Janssen, M.; Wijffels, R.H.
Source Algal Research 2 (2013)3. - ISSN 2211-9264 - p. 204 - 211.
DOI https://doi.org/10.1016/j.algal.2013.04.007
Department(s) Bioprocess Engineering
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) photosynthetic efficiency - chlorella-sorokiniana - cell-growth - light - microalgae - photobioreactor - accumulation - green - water - path
Abstract We explored the effect of pH and nitrogen supply on the biomass and fatty acid productivities of the microalga Neochloris oleoabundans cultivated in saline medium under continuous light. During light-limited and nitrogen-replete conditions, the maximal volumetric biomass productivity was 0.98 gDW L-1 d-1 at pH 8.2 and 0.47 gDW L-1 d-1 at pH 10. Apparently microalgal growth costs more energy at high pH, resulting in lower biomass productivities.With the fatty acid content being 2-fold higher at pH 10 (8% versus 15% w/w), the maximal volumetric fatty acid productivity was 75.2 mgFA L-1 d-1 at pH 8.2 and 66.6 mgFA L-1 d-1 at pH 10.When high pH was combined with nitrogen depletion, fatty acids accumulated up to 29% (w/w), leading to the highest fatty acid productivity observed in this study (112.4 mgFA L-1 d-1). These findings stimulate further development of a two-stage process for optimal overall lipid productivity.
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