Productive encystment of haematococcus pluvialis by controlling a specific irradiation rate in a photoautotrophic induction system for astaxanthin production

Chang Duk Kang, Jin Suk Lee, Tai Hyun Park, Sang Jun Sim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A productive photoautotrophic induction system was established for the production of antioxidative astaxanthin by the green microalga Haematococcus pluvialis. During photoautotrophic induction, N-deprived Haematococcus cells were sensitive to the specific irradiation rate (I) on transformation to astaxanthin-rich cyst cells. Compared with the CO: condition, the optimum specific irradiation rate (Iopt) was confined within narrow limits between light limitation and inhibition. Maximal astaxanthin synthesis in H. pluvialis was promoted under a 5 % CO2 environment and unsynchronized illumination with a specific irradiation rate of 80 μmol photon/g·s, yielding an accumulation rate of 4.3 mg/g·day. This result indicates that a favorable CO2 concentration and controlled specific irradiation rate leads to the productive encystment of H. pluvialis and enhanced astaxanthin synthesis.

Original languageEnglish
Pages (from-to)745-748
Number of pages4
JournalJournal of Industrial and Engineering Chemistry
Volume12
Issue number5
Publication statusPublished - 2006 Sep
Externally publishedYes

Keywords

  • Astaxanthin
  • CO
  • Haematococcus pluvialis
  • Photoautotrophic induction
  • Specific irradiation rate

ASJC Scopus subject areas

  • Chemical Engineering(all)

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