New lipid-producing, cold-tolerant yellow-green alga isolated from the rocky mountains of Colorado

David R. Nelson, Sinafik Mengistu, Paul Ranum, Gail Celio, Mara Mashek, Douglas Mashek, Paul A. Lefebvre

Research output: Contribution to journalArticle

Abstract

A new strain of yellow-green algae (Xanthophyceae, Heterokonta), tentatively named Heterococcus sp. DN1 (UTEX accession number UTEX ZZ885), was discovered among snow fields in the Rocky Mountains. Axenic cultures of H. sp. DN1 were isolated and their cellular morphology, growth, and composition of lipids were characterized. H. sp. DN1 was found to grow at temperatures approaching freezing to accumulate large intracellular stores of lipids. H. sp. DN1 produces the highest quantity of lipids when grown undisturbed with high light in low temperatures. Of particular interest was the accumulation of eicosapentaenoic acid, known to be important for human nutrition, and palmitoleic acid, known to improve biodiesel feedstock properties.

Original languageEnglish (US)
Pages (from-to)853-861
Number of pages9
JournalBiotechnology Progress
Volume29
Issue number4
DOIs
StatePublished - Jul 2013

Keywords

  • Algae
  • Algal oil
  • Cold-tolerant
  • Desiccation-tolerant
  • Lipids
  • Oil

ASJC Scopus subject areas

  • Biotechnology

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