RRC ID 21767
Author Kang CD, Lee JS, Park TH, Sim SJ.
Title Comparison of heterotrophic and photoautotrophic induction on astaxanthin production by Haematococcus pluvialis.
Journal Appl. Microbiol. Biotechnol.
Abstract During light induction for astaxanthin formation in Haematococcus pluvialis, we substituted photoautotrophic induction for heterotrophic induction using acetate, both to prevent contamination by heterotrophs due to addition of organic carbon and to enhance carbon assimilation in the induced cells. Strong photoautotrophic induction was performed by N-deprivation of photoautotrophically grown Haematococcus cells followed by supplementation with bicarbonate (HCO(3)(-)) or CO(2). Bicarbonate-induced cells contained more astaxanthin than acetate-induced cells, and even further enhancement of astaxanthin accumulation was achieved by continuous CO(2) supply. The maximum astaxanthin content (77.2 mg g(-1) biomass, 3.4-fold higher than with heterotrophic induction) was obtained under conditions of 5% CO(2), yielding astaxanthin concentration and productivity of 175.7 mg l(-1) and 6.25 mg l(-1) day(-1), respectively. The results indicate that photoautotrophic induction is more effective than heterotrophic induction for astaxanthin synthesis in H. pluvialis.
Volume 68(2)
Pages 237-41
Published 2005-8
DOI 10.1007/s00253-005-1889-2
PMID 15711942
MeSH Acetates Bicarbonates Carbon Dioxide Chlorophyta / growth & development Chlorophyta / metabolism* Culture Media Light* Xanthophylls beta Carotene / analogs & derivatives* beta Carotene / biosynthesis
IF 3.67
Times Cited 40
Algae NIES-144