Biomass and lipid productivity of Neochloris oleoabundans under alkaline–saline conditions

A.M. Severino R Quintanilha Santos, P.P. Lamers, M. Janssen, R.H. Wijffels

Research output: Contribution to journalArticleAcademicpeer-review

23 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)204-211
JournalAlgal Research
Volume2
Issue number3
DOIs
Publication statusPublished - 2013

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Ettlia oleoabundans
biomass
lipids
fatty acids
nitrogen
energy costs
fatty acid composition

Keywords

  • photosynthetic efficiency
  • chlorella-sorokiniana
  • cell-growth
  • light
  • microalgae
  • photobioreactor
  • accumulation
  • green
  • water
  • path

Cite this

Severino R Quintanilha Santos, A.M. ; Lamers, P.P. ; Janssen, M. ; Wijffels, R.H. / Biomass and lipid productivity of Neochloris oleoabundans under alkaline–saline conditions. In: Algal Research. 2013 ; Vol. 2, No. 3. pp. 204-211.
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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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Biomass and lipid productivity of Neochloris oleoabundans under alkaline–saline conditions. / Severino R Quintanilha Santos, A.M.; Lamers, P.P.; Janssen, M.; Wijffels, R.H.

In: Algal Research, Vol. 2, No. 3, 2013, p. 204-211.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Biomass and lipid productivity of Neochloris oleoabundans under alkaline–saline conditions

AU - Severino R Quintanilha Santos, A.M.

AU - Lamers, P.P.

AU - Janssen, M.

AU - Wijffels, R.H.

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - photosynthetic efficiency

KW - chlorella-sorokiniana

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KW - light

KW - microalgae

KW - photobioreactor

KW - accumulation

KW - green

KW - water

KW - path

U2 - 10.1016/j.algal.2013.04.007

DO - 10.1016/j.algal.2013.04.007

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JO - Algal Research

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SN - 2211-9264

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