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Biotechnology Letters

, Volume 32, Issue 12, pp 1911–1914 | Cite as

Ultraviolet-B radiation improves astaxanthin accumulation in green microalga Haematococcus pluvialis

  • Zhengyun Wu
  • Guanqun Chen
  • Siukuen Chong
  • Nai-ki Mak
  • Feng Chen
  • Yue Jiang
Original Research Paper

Abstract

Ultraviolet-B (UV-B) radiation has significantly negative effect on cell survival rate (P < 0.01) and positive effect on astaxanthin accumulation (P < 0.01) of Haematococcus pluvialis. H. pluvialis accumulated 3.2 mg/g of astaxanthin when being exposed to 5 W/m2 of UV-B for 60 min prior to 72 h of high light treatment, which was 122% higher than that of the control. This UV-B treatment also significantly stimulated lipid peroxidation and the value of malondialdehyde and glutathione peroxidase activities were 156 and 166% higher than those of control, respectively (P < 0.01).

Keywords

Antioxidant enzyme Astaxanthin Haematococcus pluvialis Ultraviolet-B radiation 

Notes

Acknowledgment

The authors acknowledge the support from Faculty Research Grant of Hong Kong Baptist University.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Zhengyun Wu
    • 1
    • 3
  • Guanqun Chen
    • 1
    • 4
  • Siukuen Chong
    • 1
  • Nai-ki Mak
    • 1
  • Feng Chen
    • 2
  • Yue Jiang
    • 1
  1. 1.Department of Biology and Kwong Living Trust Food Safety & Analysis LaboratoryHong Kong Baptist UniversityKowloon TongHong Kong
  2. 2.School of Biological SciencesThe University of Hong KongPokfulam RoadHong Kong
  3. 3.Department of Food Engineering, College of Light Industry & Food EngineeringSichuan UniversityChengduChina
  4. 4.Department of Agricultural, Food & Nutritional ScienceUniversity of AlbertaEdmontonCanada

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