Evaluation of novel thermo-resistant Micractinium and Scenedesmus sp for efficient biomass and lipid production under different temperature and nutrient regimes

Date

2016-07-01

Author

Sonmez, Cagla
ELÇİN, EVRİM
Akin, Dilan
Öktem, Hüseyin Avni
Yücel, Ayşe Meral

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Despite the vast interest in microalgae as feedstock for biodiesel production, relatively few studies examined their response to diurnal temperature fluctuation. Here, we describe biomass and lipid productivities and fatty acid profiles of thermo-resistant Micractinium sp. and Scenedesmus sp. grown in batch cultures in a laboratory set-up that mimics a typically warm summer day in Central Anatolia with a 16-h light temperature of 30 degrees C and 8-h dark temperature of 16 degrees C (30 degrees C (day)/16 degrees C (night)). Both strains can survive a temperature range of 10-50 degrees C. We found the lipid productivities of Micractinium sp. and Scenedesmus sp. as 30/21 mg L-1 d(-1) and 6/7 mg L-1 d(-1), respectively during the 30 degrees C (day)/16 degrees C (night) cycle. Saturated fatty acid content increased with increasing temperature. Additionally, we cultured Micractinium sp. under Nitrogen (N) and Phosphorus (P) limiting conditions. Highest lipid productivity of 85.4 +/- 2 mg L-1 d(-1) was obtained under P-depletion during exponential growth phase. Oleic acid amount also increased eight fold during P-deplete.

Subject Keywords

Thermo-resistant microalgae, Diurnal temperature fluctuation, Biodiesel, FAME, Lipid productivity

URI

https://hdl.handle.net/11511/30085

Journal

BIORESOURCE TECHNOLOGY

DOI

https://doi.org/10.1016/j.biortech.2016.03.125

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

C. Sonmez, E. ELÇİN, D. Akin, H. A. Öktem, and A. M. Yücel, “Evaluation of novel thermo-resistant Micractinium and Scenedesmus sp for efficient biomass and lipid production under different temperature and nutrient regimes,” BIORESOURCE TECHNOLOGY, pp. 422–428, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30085.