Biotechnology Letters

, Volume 39, Issue 1, pp 85–90 | Cite as

Low temperature and Daphnia-associated infochemicals promote colony formation of Scenedesmus obliquus and its harvesting

  • Xuexia Zhu
  • Jingwen Yang
  • Xingxing Zhang
  • Lu Zhang
  • Xiaojun Wang
  • Yuan Huang
  • Zhou Yang
Original Research Paper
First Online:
Received:
Accepted:

Abstract

Objective

To explore the combined effects of temperature and Daphnia-associated infochemicals on colony formation of Scenedesmus obliquus to faciliate harvesting the algal biomass.

Results

A three-parameter modified Gaussian model fitted the changes of the number of cells per particle in S. obliquus induced by Daphnia culture filtrate well under any temperature. Decreases in temperature enhanced the induced–colony formation of Scenedesmus. The maximum colony size at 15–25 °C was significantly larger than those at 30–35 °C. An additional 1 or 2 days at low temperature was needed to reach the maximum colony size, which indicates the best harvest time for algal biomass.

Conclusion

Induced-colony formation of Scenedesmus by Daphnia culture filtrate at 15–25 °C is recommended to settle algal cells. This condition facilitates harvesting the biomass.

Keywords

Colony formation Infochemicals Microalgal harvest Scenedesmus obliquus Temperature 
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Notes

Acknowledgments

This study was supported by National Natural Science Foundation of China (31270504), National Natural Science Youth Foundation of China (31500373), Natural Science Youth Foundation of Jiangsu Province (BK20150972), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Xuexia Zhu
    • 1
  • Jingwen Yang
    • 1
  • Xingxing Zhang
    • 1
  • Lu Zhang
    • 1
  • Xiaojun Wang
    • 1
  • Yuan Huang
    • 1
  • Zhou Yang
    • 1
  1. 1.Jiangsu Key Laboratory for Biodiversity and BiotechnologySchool of Biological SciencesNanjing Normal UniversityNanjingChina

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