Applied Microbiology and Biotechnology

, Volume 43, Issue 6, pp 1014–1018 | Cite as

Effects of intensity and quality of light on phycocyanin production by a marine cyanobacterium Synechococcus sp. NKBG 042902

  • H. Takano
  • T. Arai
  • M. Hirano
  • T. Matsunaga
Original Paper


Among 150 strains, including marine cyanobacteria isolated from coastal areas of Japan and a freshwater cyanobacterium from the IAM collection, Spirulina platensis IAM M-135, the marine cyanobacterium Synechococcus sp. NKBG 042902 contained the highest amount of phycocyanin (102 mg/g dry cell weight). We have proposed that the cyanobacterium could be an alternative producer for phycocyanin. The effects of light intensity and light quality on the phycocyanin content in cells of Synechococcus sp. NKBG 042902 were investigated. When the cyanobacterium was cultured under illumination of 25 ώmol m−2 s−1 using a cool-white fluorescent lamp, the phycocyanin content was highest, and the phycocyanin and biomass productivities were 21 mg 1−1 day−1 and 100 mg 1−1 day−1 respectively. Red light was essential for phycocyanin production by this cyanobacterium. Phycocyanin and biomass production were carried out by the cyanobacterium cultures grown under only red light (peak wavelength at 660 nm) supplied from light-emitting diodes (LED). Maximum phycocyanin and biomass productivities were 24 mg 1−1 day−1 and 130 mg 1−1 day−1 when the light intensity of the LED was 55 ώmol m−2 s−1.


Biomass Productivity Synechococcus Fluorescent Lamp Cell Weight Spirulina 
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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • H. Takano
    • 1
  • T. Arai
    • 2
  • M. Hirano
    • 2
  • T. Matsunaga
    • 1
  1. 1.Department of BiotechnologyTokyo University of Agriculture and TechnologyTokyoJapan
  2. 2.Department of Applied ChemistryKogakuin UniversityTokyoJapan

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