Strain selection for β-carotene production by Dunaliella

A. Markovits, M. P. Gianelli, RAUL JORGE CONEJEROS RISCO, S. Erazo

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Abstract

Four strains of Dunaliella were grown at 25°C and pH 8±0.5, with continous illumination at 200 W/m2. Their maximum specific growth rates ranged from 0.093 day-1 to 0.234 day-1, nitrate yields from 3.0 to 7.8 g cells/g NaNO3 and lipid contents from 3% to 6% of the dry wt, with carotenes 50 to 80% of the lipids. Of the carotenes, β-carotene made up 7 to 19%; all-trans-β-carotene 32 to 52% and 9-cis-β-carotene 29 to 55%. There are, therefore, considerable intra-specific differences between strains of Dunaliella.

Original languageEnglish
Pages (from-to)534-537
Number of pages4
JournalWorld Journal of Microbiology & Biotechnology
Volume9
Issue number5
DOIs
StatePublished - 1 Sep 1993

Keywords

  • Carotenes
  • Dunaliella salina
  • fatty acids
  • growth rate
  • microalgae culture
  • nitrate yield

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