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Related Experiment Video

Updated: Feb 8, 2026

Author Spotlight: Scaling Microalgal Biotechnology for Enhanced Biomethane Production
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[Highly Efficient Bioflocculation of Microalgae Using Mucor circinelloides].

Qiong Gu1, Wen-Biao Jin1, Yuan-Qing Chen1

  • 1School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China.

Huan Jing Ke Xue= Huanjing Kexue
|July 3, 2018
PubMed
Summary
This summary is machine-generated.

This study demonstrates that the fungus Mucor circinelloides effectively harvests microalgae Chlorella pyrenoidosa. Optimal conditions achieved over 90% harvest efficiency in both synthetic and sewage media.

Keywords:
Mucor circinelloidesfilamentous fungiharvestmechanismmicroalgae

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Area of Science:

  • Biotechnology
  • Environmental Science
  • Microbiology

Background:

  • Microalgal biomass production is hindered by costly harvesting due to low cell concentration and small size.
  • Efficient microalgae harvesting is crucial for economic viability in large-scale cultivation.

Purpose of the Study:

  • To evaluate the efficiency of Mucor circinelloides spores for harvesting Chlorella pyrenoidosa.
  • To determine optimal co-culture conditions for microalgae-fungi harvesting.
  • To investigate the symbiotic interaction and harvesting mechanism.

Main Methods:

  • Co-cultivation of Chlorella pyrenoidosa with Mucor circinelloides spores.
  • Optimization of pH, glucose concentration, and fungi-to-algae ratio.
  • Analysis of polysaccharide concentration and Zeta potential.

Main Results:

  • Optimal harvest efficiency of 91.08% achieved at pH 6.0, 1.25 g/L glucose, and a 1:250 fungi-to-algae ratio.
  • Similar high efficiency (92.33%) observed in actual sewage medium.
  • Reduced polysaccharide increase in co-culture suggests fungal utilization, indicating symbiosis.
  • Zeta potential changes indicate charge neutralization as the flocculation mechanism.

Conclusions:

  • Mucor circinelloides is an effective agent for harvesting Chlorella pyrenoidosa.
  • Established optimal conditions are applicable to both synthetic media and real sewage.
  • The study confirms a symbiotic relationship and elucidates the charge neutralization mechanism in microalgae-fungi harvesting.