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Related Concept Videos

Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
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Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.

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Related Experiment Video

Updated: Jul 3, 2026

Cell Co-culture Patterning Using Aqueous Two-phase Systems
10:11

Cell Co-culture Patterning Using Aqueous Two-phase Systems

Published on: March 26, 2013

Novel bioseparations using two-phase aqueous micellar systems.

C L Liu1, Y J Nikas, D Blankschtein

  • 1Department of Chemical Engineering and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Biotechnology and Bioengineering
|October 20, 1996
PubMed
Summary
This summary is machine-generated.

Two-phase aqueous micellar systems show promise for separating hydrophilic biomaterials. These systems, using specific surfactants, effectively concentrate proteins via liquid-liquid extraction, aligning well with theoretical predictions.

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Last Updated: Jul 3, 2026

Cell Co-culture Patterning Using Aqueous Two-phase Systems
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Published on: March 26, 2013

Separation of Bioactive Small Molecules, Peptides from Natural Sources and Proteins from Microbes by Preparative Isoelectric Focusing (IEF) Method
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Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
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Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

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Area of Science:

  • Biochemistry
  • Separation Science
  • Physical Chemistry

Background:

  • Liquid-liquid extraction is a key technique for separating biomaterials.
  • Aqueous micellar systems offer a unique medium for extraction.
  • Hydrophilic biomaterials present challenges in conventional separation methods.

Purpose of the Study:

  • To investigate the efficacy of two-phase aqueous micellar systems for biomaterial separation.
  • To evaluate the use of nonionic (C(10)E(4)) and zwitterionic (C(8)-lecithin) surfactants in these systems.
  • To compare experimental protein partitioning with theoretical models.

Main Methods:

  • Experimental determination of protein partitioning coefficients in micellar systems.
  • Theoretical modeling of protein-micelle interactions, focusing on excluded-volume effects.
  • Review of experimental and theoretical data for multiple hydrophilic proteins.

Main Results:

  • Experimental partitioning of proteins like cytochrome c, ovalbumin, and BSA was analyzed.
  • Theoretical predictions based on excluded-volume interactions showed good agreement with experimental data.
  • Both C(10)E(4) and C(8)-lecithin micellar systems demonstrated effective protein partitioning.

Conclusions:

  • Two-phase aqueous micellar systems are effective for separating and concentrating hydrophilic biomaterials.
  • The studied systems provide a viable alternative for protein extraction.
  • Theoretical models accurately predict protein behavior in these micellar extraction systems.