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Related Concept Videos

Silica Gel Column Chromatography: Overview01:10

Silica Gel Column Chromatography: Overview

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Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
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Filtration00:53

Filtration

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Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
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Gas Chromatography: Introduction01:13

Gas Chromatography: Introduction

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Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC,  a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
4.4K
Types Of Column Chromatography01:29

Types Of Column Chromatography

14.8K
The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
When the...
14.8K
Size-Exclusion Chromatography01:08

Size-Exclusion Chromatography

2.3K
In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
2.3K
Affinity Chromatography01:03

Affinity Chromatography

3.3K
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...
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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
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Gel-Filtration Chromatography.

Ciarán Ó'Fágáin1,2, Philip M Cummins3, Brendan F O'Connor3,4,5

  • 1School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland. ciaran.fagan@dcu.ie.

Methods in Molecular Biology (Clifton, N.J.)
|October 13, 2016
PubMed
Summary
This summary is machine-generated.

Gel-filtration chromatography effectively separates biological molecules. This review covers its principles, optimal conditions, matrix types, and literature-cited applications for high-yield purification.

Keywords:
Gel exclusionGel permeationGel-filtration chromatographyMolecular mass estimationMolecular sieveOperating conditionsSeparationsSize exclusionSize-exclusion reaction chromatography

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Area of Science:

  • Biochemistry
  • Analytical Chemistry
  • Molecular Biology

Background:

  • Gel-filtration chromatography is a key technique for separating biomolecules.
  • High yield and purity are critical in biological separations.

Purpose of the Study:

  • To explain the principles of gel-filtration chromatography.
  • To guide the selection of appropriate operating conditions and matrices.
  • To showcase diverse applications supported by scientific literature.

Main Methods:

  • Detailed explanation of the gel-filtration chromatography mechanism.
  • Comparison of different matrix materials and their properties.
  • Discussion on optimizing parameters like flow rate and buffer composition.

Main Results:

  • Effective separation of biological molecules based on size.
  • High recovery yields achievable with optimized protocols.
  • Versatility demonstrated across various biochemical applications.

Conclusions:

  • Gel-filtration chromatography is a powerful and adaptable purification method.
  • Proper selection of conditions and matrices enhances separation efficiency.
  • The technique remains essential for biological research and analysis.