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Related Concept Videos

Biosynthesis of Lipids01:29

Biosynthesis of Lipids

285
Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...
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Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

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Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
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Membrane Fluidity01:26

Membrane Fluidity

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Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
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Membrane Fluidity01:23

Membrane Fluidity

166.8K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
166.8K
Membrane Lipids01:32

Membrane Lipids

31.8K
Lipids are an essential component of all biological membranes. The average lipid content in mammalian membranes is 50%, though it can be as low as 20% in the inner mitochondrial membrane or as high as 80% in the myelin sheath present around the nerve cells.
Phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin are the most common phospholipids present in mammalian membranes. At physiological pH, phosphatidylserine is negatively charged, while the other three...
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Membrane Domains01:18

Membrane Domains

6.6K
The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
Protein Domains
The membrane comprises a group of distinct proteins responsible for carrying out a cell's specific function. For example, the plasma membrane of the human sperm, or a single germ cell, contains a unique set of proteins in the...
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Related Experiment Video

Updated: Nov 14, 2025

Automated Lipid Bilayer Membrane Formation Using a Polydimethylsiloxane Thin Film
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Automated Lipid Bilayer Membrane Formation Using a Polydimethylsiloxane Thin Film

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Robust Superamphiphilic Membrane with a Closed-Loop Life Cycle.

Chongnan Ye1, Vincent S D Voet2, Rudy Folkersma2

  • 1Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.

Advanced Materials (Deerfield Beach, Fla.)
|March 8, 2021
PubMed
Summary

Superamphiphilic vitrimer epoxy resin membranes (SAVER) offer robust oil-spill remediation. These membranes are durable, easily recoverable from fouling, and enable a sustainable, closed-loop lifecycle for environmental applications.

Keywords:
biobased membranesclosed-loop life cycleoil/water separationrobust membranessuperamphiphilic membranesvitrimer epoxy resin membranes

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Biomembrane Fabrication by the Solvent-assisted Lipid Bilayer SALB Method
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Self-Assembly of Hybrid Lipid Membranes Doped with Hydrophobic Organic Molecules at the Water/Air Interface
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Area of Science:

  • Materials Science
  • Environmental Science
  • Polymer Chemistry

Background:

  • Oil-spill remediation faces challenges with conventional membrane robustness and fouling.
  • Existing membranes struggle with harsh conditions and waste management issues from foulants like algae and sand.

Purpose of the Study:

  • To develop a new generation of superamphiphilic membranes for efficient oil-water separation.
  • To address the limitations of conventional membranes in terms of robustness and lifecycle management.

Main Methods:

  • Fabrication of superamphiphilic vitrimer epoxy resin membranes (SAVER).
  • Testing mechanical robustness against harsh chemicals (aqua regia, sodium hydroxide).
  • Demonstrating fouling recovery using dynamic transesterification reactions.

Main Results:

  • SAVER membranes exhibit strong mechanical robustness, comparable to classical epoxy resins.
  • The membranes successfully separate oil and water efficiently.
  • Contaminated SAVER membranes can be easily recovered and reused via dynamic polymer network reactions.

Conclusions:

  • SAVER membranes present a promising, robust solution for oil-spill remediation.
  • The dynamic vitrimer network allows for facile membrane recovery and reuse, creating a closed-loop lifecycle.
  • This biobased approach offers a sustainable alternative for membrane design and waste management.