Production of ω-3 polyunsaturated fatty acids from cull potato using an algae culture process

Zhanyou Chi, Bo Hu, Yan Liu, Craig Frear, Zhiyou Wen, Shulin Chen

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Algal cultivation for converting cull potato to docosahexaenoic acid (DHA) was studied. Schizochytrium limacinum SR21 was selected as the better producing strain, compared with Thraustochytrium aureum because of higher cell density and DHA content. Used as both carbon and nitrogen source, an optimal ratio of hydrolyzed potato broth in the culture medium was determined as 50%, with which the highest production of 21.7 g/L dry algae biomass and 5.35 g/L DHA was obtained, with extra glucose supplemented. Repeat culture further improved the cell density but not fed batch culture, suggesting limited growth was most likely caused by metabolites inhibition.

Original languageEnglish (US)
Pages (from-to)805-815
Number of pages11
JournalApplied Biochemistry and Biotechnology
Volume137-140
Issue number1-12
DOIs
StatePublished - Apr 1 2007

Keywords

  • Cull potato
  • Docosahexaenoic acid
  • Fish oil
  • Microalgae
  • Omega-3 fatty acid
  • Schizochytrium

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