Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus

G. Breuer; P.P. Lamers; D.E. Martens; R.B. Draaisma; R.H. Wijffels

doi:10.1016/j.biortech.2013.05.105

Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus

G. Breuer, P.P. Lamers, D.E. Martens, R.B. Draaisma, R.H. Wijffels

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

197 Citations (Scopus)

Abstract

Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 C.

Original language	English
Pages (from-to)	1-9
Journal	Bioresource Technology
Volume	143
DOIs	https://doi.org/10.1016/j.biortech.2013.05.105
Publication status	Published - 2013

Keywords

fatty-acid-composition
neochloris-oleoabundans
nannochloropsis sp
microalgae
growth
photosynthesis
biodiesel
cultures

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2013.05.105

Cite this

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title = "Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus",

abstract = "Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 C.",

keywords = "fatty-acid-composition, neochloris-oleoabundans, nannochloropsis sp, microalgae, growth, photosynthesis, biodiesel, cultures",

author = "G. Breuer and P.P. Lamers and D.E. Martens and R.B. Draaisma and R.H. Wijffels",

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AU - Breuer, G.

AU - Lamers, P.P.

AU - Martens, D.E.

AU - Draaisma, R.B.

AU - Wijffels, R.H.

PY - 2013

Y1 - 2013

N2 - Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 C.

AB - Microalgae-derived lipids in the form of triacylglycerols (TAGs) are considered an alternative resource for the production of biofuels and food commodities. Large scale production of microalgal TAGs is currently uneconomical. The cost price could be reduced by improving the areal and volumetric TAG productivity. The economic value could be increased by enhancing the TAG quality. To improve these characteristics, the impact of light intensity, and the combined impact of pH and temperature on TAG accumulation were studied for Scenedesmus obliquus UTEX 393 under nitrogen starved conditions. The maximum TAG content was independent of light intensity, but varied between 18% and 40% of dry weight for different combinations of pH and temperature. The highest yield of fatty acids on light (0.263 g/mol photon) was achieved at the lowest light intensity, pH 7 and 27.5 C.

KW - fatty-acid-composition

KW - neochloris-oleoabundans

KW - nannochloropsis sp

KW - microalgae

KW - growth

KW - photosynthesis

KW - biodiesel

KW - cultures

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DO - 10.1016/j.biortech.2013.05.105

M3 - Article

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SP - 1

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JO - Bioresource Technology

JF - Bioresource Technology

ER -

Effect of light intensity, pH, and temperature on triacylglycerol (TAG) accumulation induced by nitrogen starvation in Scenedesmus obliquus

Abstract

Keywords

UN SDGs

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