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Related Concept Videos

Affinity Chromatography01:03

Affinity Chromatography

Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
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,...
Chromatography: Introduction01:10

Chromatography: Introduction

Chromatography is a technique used to separate compounds based on differences of partitioning between two phases, the stationary phase and the mobile phase.
The phase in which the compounds linger or on which the compounds adsorb is called the stationary phase, whereas the mobile phase is the solvent that carries the solutes to be analyzed. In traditional column chromatography, the mixture flows through the stationary phase, and the compounds partition between the stationary and mobile phases...
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Electrochemical Systems

Electrochemical systems provide a fascinating insight into the dynamic interplay of charged species within various phases. One notable example is the interaction between a membrane permeable to K⁺ ions but not to Cl⁻ ions, separating an aqueous KCl solution from pure water. As K⁺ ions diffuse through the membrane, they generate net charges on each phase, leading to a potential difference between them.Similarly, when a piece of Zn is immersed in an aqueous ZnSO₄ solution, the Zn metal, composed...

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

Aqueous two-phase affinity partitioning systems: current applications and trends.

Federico Ruiz-Ruiz1, Jorge Benavides, Oscar Aguilar

  • 1Centro de Biotecnología FEMSA, Departamento de Biotecnología e Ingeniería de Alimentos, Tecnológico de Monterrey, Campus Monterrey, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, NL 64849, Mexico.

Journal of Chromatography. A
|May 25, 2012
PubMed
Summary
This summary is machine-generated.

Aqueous two-phase systems (ATPS) offer cost-effective biological product recovery. Modifying ATPS with affinity ligands significantly enhances purification and yield, overcoming limitations of traditional methods.

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Area of Science:

  • Biotechnology
  • Bioseparation
  • Process Engineering

Background:

  • Aqueous two-phase systems (ATPS) are widely used for biological product recovery due to their versatility, scalability, and cost-effectiveness.
  • Traditional ATPS often exhibit low selectivity, limiting their use as a primary purification step.
  • Modification of ATPS with affinity ligands presents a strategy to improve selectivity and efficiency.

Purpose of the Study:

  • To review current applications of affinity partitioning in ATPS for biological product fractionation.
  • To highlight emerging trends and advancements in this purification technique.
  • To discuss the challenges and future directions for affinity-based ATPS.

Main Methods:

  • Literature review focusing on affinity partitioning strategies within ATPS.
  • Analysis of studies demonstrating enhanced recovery and purification of biological products.
  • Synthesis of information on applications, trends, and challenges in the field.

Main Results:

  • Affinity ligand modification substantially increases recovery yields and purification factors for biological products.
  • Diverse biological molecules, including proteins and cells, have been successfully fractionated using this approach.
  • The integration of affinity ligands overcomes the inherent low selectivity of conventional ATPS.

Conclusions:

  • Affinity partitioning significantly enhances the efficiency of ATPS for biological product recovery and purification.
  • This technique holds great promise for various bioprocessing applications, improving product quality and yield.
  • Further research is needed to address challenges and optimize ligand design for broader applicability.