Simultaneous increase in cellular content and volumetric concentration of lipids in Bracteacoccus bullatus cultivated at reduced nitrogen and phosphorus concentrations

Anna Mamaeva, Zorigto Namsaraev, Yevhen Maltsev, Evgeniy Gusev, Maxim Kulikovskiy, Maria Petrushkina, Alla Filimonova, Boris Sorokin, Nikita Zotko, Vladimir Vinokurov, Dmitry Kopitsyn, Daria Petrova, Andrei Novikov, Denis Kuzmin

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Manipulation of the nutrient concentration is an inexpensive and efficient method for increasing lipid and TAG accumulation in algal cells. However, high volumetric production requires finding a proper balance between the decrease of biomass production and the increase in the total lipid content. We isolated a strain of green microalga Bracteacoccus bullatus and increased its lipid content from 17 to 59% of biomass dry weight by manipulating of nitrogen and phosphorus content in the medium. The 10-fold reduction of the nitrogen and phosphorus concentration in the medium was the most efficient method of the lipid induction compared to nutrient deplete and high nutrient conditions. The oleic (48–64% mass of total fatty acids) and linoleic (14–24% mass of total fatty acids) acids dominated in the fatty acid profile, thus making this strain a suitable candidate for biodiesel production.

Original languageEnglish
Pages (from-to)2237-2246
Number of pages10
JournalJournal of Applied Phycology
Volume30
Issue number4
DOIs
Publication statusPublished - 1 Aug 2018
Externally publishedYes

Keywords

  • Chlorophyta
  • Fatty acid
  • Lipids
  • Nitrogen and phosphorus deprivation
  • Triacylglycerides (TAGs)

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