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Related Concept Videos

Biofuels01:25

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The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
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Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
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Peptide-mediated microalgae harvesting method for efficient biofuel production.

Yoshiaki Maeda1, Takuma Tateishi1, Yuta Niwa1

  • 1Division of Biotechnology and Life Science, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei, Tokyo 184-8588 Japan.

Biotechnology for Biofuels
|January 16, 2016
PubMed
Summary

Researchers engineered microalgae for efficient biofuel production by developing a cell-surface display system. This method enables controllable flocculation for energy-efficient harvesting of oleaginous microalgae.

Keywords:
Biofuel productionCell-surface displayDiatomFistulifera solaris JPCC DA0580FrustulinHarvestingSedimentationSilica-affinity peptide

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Area of Science:

  • Biotechnology
  • Sustainable Energy
  • Microalgal Research

Background:

  • Microalgae are a promising source for sustainable biofuel production.
  • Current microalgae harvesting is energy-intensive, hindering industrialization.
  • Cell-surface display of interactive proteins can enable auto- and controllable-flocculation for efficient harvesting.

Purpose of the Study:

  • To establish a cell-surface display system in oleaginous microalgae for enhanced harvesting.
  • To demonstrate engineered peptide-mediated flocculation for microalgae biofuel production.

Main Methods:

  • Identified and selected frustulins (cell wall proteins) from Fistulifera solaris JPCC DA0580.
  • Fused a selected frustulin with green fluorescent protein (GFP) for cell-surface display.
  • Utilized silica-affinity peptides for engineered cell attachment and sedimentation.

Main Results:

  • Successfully demonstrated cell-surface display of GFP in diatoms.
  • Confirmed antibody interaction with the displayed GFP on the cell surface.
  • Engineered cells with silica-affinity peptides efficiently attached to silica particles, leading to rapid sedimentation.

Conclusions:

  • First report of engineered peptide-mediated harvesting of oleaginous microalgae using cell-surface display.
  • Silica-affinity peptide-mediated harvesting shows comparable efficiency to traditional flocculation methods.
  • This method offers a pathway for efficient biofuel production through improved microalgae harvesting.