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Related Concept Videos

Biofuels01:25

Biofuels

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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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Production of Organic Acids01:25

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Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
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Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
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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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Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Updated: Apr 19, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Microbial lipid-based lignocellulosic biorefinery: feasibility and challenges.

Mingjie Jin1, Patricia J Slininger2, Bruce S Dien2

  • 1Biomass Conversion Research Laboratory (BCRL), Department of Chemical Engineering and Materials Science, Michigan State University, MBI Building, 3815 Technology Boulevard, Lansing, MI 48910, USA.

Trends in Biotechnology
|December 9, 2014
PubMed
Summary

Microbial lipid production from lignocellulosic biomass is feasible for drop-in fuels. Economic viability requires coproduction of high-value lipids, lignin, and protein in a biorefinery.

Keywords:
biorefinerylignocellulosic lipidsmicrobial lipidssingle-cell oil

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Area of Science:

  • Biotechnology
  • Biorefining
  • Microbial lipid production

Background:

  • Single-cell oil (SCO) research has intensified with the shift towards drop-in biofuels.
  • Lignocellulosic biomass is a sustainable feedstock for microbial lipid production.
  • Biorefinery concepts are crucial for integrating SCO production into a circular economy.

Purpose of the Study:

  • To review the feasibility and challenges of microbial lipid production from lignocellulosic biomass within a biorefinery framework.
  • To provide an overview of key aspects including technologies, markets, microbes, metabolism, strain development, and technoeconomics.
  • To identify critical factors for the economic viability of lignocellulosic SCO-based biorefineries.

Main Methods:

  • Literature review of biorefinery technologies and microbial lipid production.
  • Analysis of oleaginous microbes, lipid accumulation, and strain development strategies.
  • Examination of process configurations, technical hurdles, lipid recovery, and technoeconomic assessments.

Main Results:

  • Successful lignocellulosic SCO production hinges on coproducing diverse lipids (low- and high-value).
  • Upgrading lignin and protein fractions to high-value products is essential for economic feasibility.
  • Integration within a biorefinery is key to overcoming technical and economic challenges.

Conclusions:

  • Lignocellulosic SCO-based biorefineries are feasible with strategic coproduction and valorization of biomass components.
  • Overcoming technical hurdles in lipid production and recovery is critical.
  • Economic viability depends on a holistic biorefinery approach maximizing product value.