Effect of nutrient depletion on beta-carotene and glycerol accumulation in two strains of Dunaliella sp

Kanchan Phadwal, P K Singh

Research output: Contribution to journalArticlepeer-review

Abstract

The response of two strains of Dunaliella, a beta-carotene accumulating halotolerant alga, was evaluated under sulphate, nitrate and phosphate limitation. All these factors decreased the growth rate and chlorophyll content but, increased the beta-carotene content of the two isolates of Dunaliella, D1, obtained from GTCC and D2 an indigenous strain isolated from Sambhar salt lake, India. Both the strains exhibited accumulation of beta-carotene and glycerol under the different nutrient limiting conditions. A maximum accumulation of 3.99 pg/cell of beta-carotene was observed under phosphate depletion. However, nutrient depletion did not significantly affect the glycerol accumulation in these cells. D2, the indigenous isolate, was found to be a better accumulator of beta-carotene than D1.

Original languageEnglish
Pages (from-to)55-8
Number of pages4
JournalBioresource technology
Volume90
Issue number1
DOIs
Publication statusPublished - Oct 2003

Keywords

  • Cells, Cultured
  • Chlorophyll
  • Chlorophyta
  • Culture Media
  • Glycerol
  • Nitrates
  • Phosphates
  • Species Specificity
  • Sulfates
  • beta Carotene

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