Polar Lipid Profiling
Polar Lipid Profiling - Related Videos
13:02
Arabidopsis thaliana Polar Glycerolipid Profiling by Thin Layer Chromatography (TLC) Coupled with Gas-Liquid Chromatography (GLC)
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Cited by 102 •
2011
Composition of polar lipid extracts and the fatty acid composition of individual glycerolipids are determined in a simple and robust lipid profiling experiment. For this purpose, glycerolipids are isolated by thin layer chromatography and subjected to transmethylation of their acyl groups. Fatty acyl methylesters are quantified by gas-liquid chromatography.
08:54
NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements
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Cited by 21 •
2017
Here, high-resolution 1H and 13C Nuclear Magnetic Resonance (NMR) spectroscopy was used as a rapid and reliable tool for quantitative and qualitative analysis of encapsulated fish oil supplements.
03:26
Thin Layer Chromatography-Based Separation of Mycolic Acid Variants: A Method to Separate Mycobacterial Cell Wall Lipids Based on Polarity
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2025
This video demonstrates the thin-layer chromatography-based separation of mycolic acids. This technique separates the different mycolic acids—long-chain lipids present in the cell wall of mycobacteria—based on their polarity.
01:01
Group Polarization
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2020
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition. The phenomenon of group polarization explains many actions taken by groups that would not...
03:38
Structure of Lipids
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2020
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 birds and...
FAQs
Mass spectrometry uses two complementary signals: the molecular ion indicates the mass of the detected lipid, while fragmentation patterns provide structural information that helps differentiate lipid classes and species. This combination moves analysis beyond total lipid abundance, allowing a profile to reveal molecular changes associated with membrane composition, cellular signaling, or other biological responses.
These lipid classes can contribute differently to the overall composition measured in a biological sample. Treating them as separate groups allows investigators to determine whether a change affects several classes broadly or is concentrated in one category. That distinction can clarify whether altered profiles relate more closely to membrane organization, signaling, or metabolic regulation.
Comparisons across organisms, tissues, or experimental conditions provide a reference for identifying relative changes rather than viewing each measurement in isolation. A shift in the abundance or distribution of detected lipid species can then be associated with genetic or environmental differences. This comparative approach helps connect molecular lipid changes with biological responses and disease-associated pathways.
A typical workflow starts by extracting lipids from cells or tissues. The extracted material is then separated according to relevant chemical properties before entering mass spectrometric analysis. The instrument detects molecular ions and fragmentation patterns, and the resulting signals are used to distinguish lipid classes and species. This sequence links sample preparation with molecular-level measurement.
The resulting profile can show changes in membrane composition, cellular signaling, and energy metabolism. When measurements are compared between experimental groups, these molecular differences may also identify pathways associated with disease or altered environmental conditions. Because the analysis resolves lipid classes and species, it can connect broad biological outcomes to specific patterns in lipid composition.
Polar lipid profiling supports investigations of membrane biology, host-pathogen interactions, metabolic regulation, and disease-associated pathways. It can also contribute to biomarker studies by revealing lipid patterns that differ among organisms, tissues, or experimental conditions. In these settings, the method provides molecular-level evidence for examining how biological systems respond to genetic or environmental change.