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Related Concept Videos

What are Lipids?01:38

What are Lipids?

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Overview
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What are Lipids?01:31

What are Lipids?

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Lipids function as structural components of cellular membranes, in addition to acting as energy reservoirs and signaling molecules. They are thus crucial to all living organisms.  The three biologically important classes of lipids are triglycerides, phospholipids, and steroids.
Non-Polar and Hydrophobic Characteristics of Lipids
Lipids are a structurally and functionally diverse group of hydrocarbons—compounds consisting of carbon and hydrogen atoms. The carbon-carbon and...
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Lipid Digestion01:06

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Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
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Structure of Lipids03:38

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Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic...
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Lipid Catabolism01:25

Lipid Catabolism

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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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Lipids as Anchors01:32

Lipids as Anchors

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In the plasma membrane, the lipids forming the bilayer can also act as an anchor to tether proteins to the membrane. The three main types of lipid anchors found in eukaryotes are – prenyl groups, fatty acyl groups, and glycosylphosphatidylinositol or GPI groups. Prenyl and fatty acyl groups act as anchors on the cytosolic surface of the membrane, whereas GPI anchors proteins on the extracellular side.
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains...
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Extraction and Characterization of Lipids from Macroalgae.

David R Nobles1, Schonna R Manning2

  • 1UTEX Culture Collection of Algae, Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, USA. dnobles@austin.utexas.edu.

Methods in Molecular Biology (Clifton, N.J.)
|June 1, 2019
PubMed
Summary

Macroalgae offer potential for biofuel production, but traditional lipid extraction methods are inaccurate. A new 2-EE protocol, superior for microalgae, is adapted for macroalgae to improve lipid yield assessment.

Keywords:
2-EthoxyethanolAlgaeLipid analysisLipid extractionLipid profiling by thin-layer chromatographyMacroalgae

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Area of Science:

  • Biomass energy
  • Marine biotechnology
  • Sustainable fuels

Background:

  • Macroalgae (seaweed) are a potential source for biodiesel and liquid fuel production.
  • Accurate lipid content assessment is crucial for macroalgal biofuel development.
  • Conventional lipid extraction methods (e.g., Bligh and Dyer, Folch) show incomplete lipid recovery from photosynthetic tissues.

Purpose of the Study:

  • To adapt and evaluate the 2-EE lipid extraction protocol for macroalgal biomass.
  • To address the limitations of conventional methods in macroalgal lipid analysis.
  • To improve the accuracy of lipid production accounting in macroalgae.

Main Methods:

  • Adaptation of the 2-EE lipid extraction protocol for macroalgal samples.
  • Comparative analysis of lipid extraction efficiency against conventional methods.
  • Assessment of lipid composition in macroalgal biomass.

Main Results:

  • The adapted 2-EE protocol demonstrates superior lipid extraction compared to conventional methods for macroalgae.
  • The 2-EE method provides a more accurate accounting of total lipid content.
  • Enhanced lipid recovery is critical for reliable biofuel yield estimations.

Conclusions:

  • The 2-EE protocol is a more effective method for macroalgal lipid extraction.
  • This improved method supports the accurate assessment of macroalgae as a biofuel feedstock.
  • Advancements in extraction efficiency are key to unlocking macroalgal potential for sustainable energy.