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Bioresour Technol. 2018 Jul;260:374-379. doi: 10.1016/j.biortech.2018.03.110. Epub 2018 Mar 30.

Optimizing photon dose and frequency to enhance lipid productivity of thermophilic algae for biofuel production.

Author information

1
The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel; Bar Ilan Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel. Electronic address: said.abu-ghosh1@biu.ac.il.
2
The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel.
3
The Dead Sea and Arava Science Center, 86910, Israel.

Abstract

The aim of this work was to examine the potential of the thermophilic green microalga Micractinium sp. to accumulate triacylglycerols (TAGs) and to develop a light strategy to increase TAG productivity in this alga. To this end, dense cultures of Micractinium sp. were grown at 37 °C under nitrogen (N) starvation and exposed to a light intensity of 1000 µmol photons m-2 s-1 of different light regimes. The highest per-biomass TAG-content and maximal volumetric productivities of TAG were displayed by the cultures grown under flashing light of 5 Hz with 50% duty cycle. Based on the results, a sufficiently high-starting culture density should be combined with a high irradiance delivered by an appropriate light regime to enhance the production of biomass enriched TAGs.

KEYWORDS:

Biofuel; Biomass; Flashing light; Micractinium; TAG; Thermophilic algae

PMID:
29665528
DOI:
10.1016/j.biortech.2018.03.110
[Indexed for MEDLINE]

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