Potential of lipid metabolism in marine diatoms for biofuel production

Biotechnology for Biofuels
Giuliana d'IppolitoAngelo Fontana

Abstract

Diatoms are an ecologically relevant group of microalgae that are not commonly considered for bio-oil production even if they are responsible for massive blooms at sea. Seventeen diatom species were screened for their capacity to produce biomass and lipids, in relation to their growth rate. Triglyceride levels were also assessed as a preferential source of biofuels. Using statistical analysis, two centric diatoms, Thalassiosira weissflogii and Cyclotella cryptica, were selected as good candidates for oil production. Lipid levels significantly increased when the two diatoms were cultivated in a two-stage process under nitrogen limitation. The effect was less pronounced in cultures where silicon was reduced to 20% of the standard supply. Nitrogen limitation did not affect growth rates but led to lipid remodeling and de novo synthesis of triacylglycerols. Triacylglycerols in T. weissflogii and C. cryptica can account for up to 82% and 88% of total glycerolipids, thereby suggesting that the two species are promising candidates for large-scale experimentation for biofuel production.

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Citations

Sep 1, 2015·Current Opinion in Biotechnology·Jennifer LeveringKarsten Zengler
Nov 9, 2016·Biotechnology for Biofuels·Hiromi TokushimaYasuhiro Kashino
Nov 10, 2016·PloS One·Roberta De AngelisRoberta Congestri
Aug 18, 2018·Advanced Healthcare Materials·Shaheer MaherDusan Losic
Mar 11, 2018·Scientific Reports·Willem StockWim Vyverman
Jul 19, 2017·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Yoshiaki MaedaTsuyoshi Tanaka
Nov 5, 2017·Nature Communications·Carmela GalloAngelo Fontana
Apr 27, 2018·Applied Microbiology and Biotechnology·Justine AussantDagmar B Stengel
Feb 4, 2019·World Journal of Microbiology & Biotechnology·Costanza BaldisserottoSimonetta Pancaldi
Aug 14, 2020·Biology·Deepak SethiSeetharaman Vaidyanathan
Sep 13, 2018·PloS One·Mirta Smodlaka TankovićMartin Pfannkuchen
Jan 26, 2021·The Science of the Total Environment·Gamze Dogdu OkcuBruce E Rittmann
Jan 10, 2021·Journal of Biotechnology·Karthick Murugan PalanisamyYusuf Chisti
Jun 22, 2021·ACS Biomaterials Science & Engineering·Navid RabieeRajender S Varma
Jun 14, 2021·Bioresource Technology·Anil Kumar PatelCheng Di Dong

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Methods Mentioned

BETA
PCA
nuclear magnetic resonance
NMR
protein assay

Software Mentioned

- P +
SIMCA

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