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Home Science & Tech

Biofuel from Microorganisms

April 27, 2020
in Science & Tech
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Context: Researchers at the International Centre for Genetic Engineering and Biotechnology (ICGEB) developing a method to improve the growth rate and sugar content of a marine microorganism called Synechococcus sp. PCC 7002. 

    • Researchers at the International Centre for Genetic Engineering and Biotechnology (ICGEB) have successfully engineered a marine cyanobacterium called Synechococcus sp. PCC 7002 which showed a higher growth rate and sugar (glycogen) content. 
    • When grown on air, the growth was doubled and the glycogen content of the cells increased by about 50%.
    • Synechococcus sp. PCC 7002 is a model marine cyanobacterium and there were other Synechococcus species or related organisms where this work can be extended right away.
    • Most biotechnological processes, including biofuel production, are dependent on the availability of low-cost and sustainable supply of sugars and a nitrogen source. 
    • The sugars typically come from plants. Plants utilize light energy through the process of photosynthesis to convert carbon dioxide in the atmosphere into biological components such as sugars, proteins and lipids.
    • Some bacteria, such as the cyanobacteria (also known as blue-green algae), too can perform photosynthesis and produce sugar by fixing the carbon dioxide in the atmosphere. 
    • The yield of sugars from cyanobacteria could potentially be much higher than that of land-based crops.
    • Further, unlike plant-based sugars, cyanobacterial biomass provides a nitrogen source in the form of proteins.

Other 

  • Cyanobacteria are found in both fresh and marine waters. Using marine cyanobacteria could be better as freshwater is increasingly getting scarce. However, there is a need to significantly improve their growth rates and sugar content in order to improve the economic feasibility of marine cyanobacteria-based sugar production.

 

Tags: Prelims

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