Improving ‘Lipid Productivity’ in Microalgae by Bilateral Enhancement of Biomass and Lipid Contents: A Review

Zahra Shokravi, Hoofar Shokravi, Ong Hwai Chyuan, Woei Jye Lau, Seyed Saeid Rahimian Koloor, Michal Petrů and Ahmad Fauzi Ismail
Additional contact information
Zahra Shokravi: Department of Microbiology, Faculty of Basic Science, Islamic Azad University Tehran-Markazi, Tehran 1477893855, Iran
Hoofar Shokravi: School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Ong Hwai Chyuan: School of Information, Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney 2007, Australia
Woei Jye Lau: School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
Seyed Saeid Rahimian Koloor: Institute for Nanomaterials, Advanced Technologies, and Innovation (CXI), Technical University of Liberec (TUL), 461 17 Liberec, Czech Republic
Michal Petrů: Institute for Nanomaterials, Advanced Technologies, and Innovation (CXI), Technical University of Liberec (TUL), 461 17 Liberec, Czech Republic
Ahmad Fauzi Ismail: School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia

Sustainability, 2020, vol. 12, issue 21, 1-28

Abstract: Microalgae have received widespread interest owing to their potential in biofuel production. However, economical microalgal biomass production is conditioned by enhancing the lipid accumulation without decreasing growth rate or by increasing both simultaneously. While extensive investigation has been performed on promoting the economic feasibility of microalgal-based biofuel production that aims to increase the productivity of microalgae species, only a handful of them deal with increasing lipid productivity (based on lipid contents and growth rate) in the feedstock production process. The purpose of this review is to provide an overview of the recent advances and novel approaches in promoting lipid productivity (depends on biomass and lipid contents) in feedstock production from strain selection to after-harvesting stages. The current study comprises two parts. In the first part, bilateral improving biomass/lipid production will be investigated in upstream measures, including strain selection, genetic engineering, and cultivation stages. In the second part, the enhancement of lipid productivity will be discussed in the downstream measure included in the harvesting and after-harvesting stages. An integrated approach involving the strategies for increasing lipid productivity in up- and down-stream measures can be a breakthrough approach that would promote the commercialization of market-driven microalgae-derived biofuel production.

Keywords: biofuel; cultivation strategy; lipid productivity; phycoprospecting; nutrient starvation harvesting; after harvesting; two-stage cultivation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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