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Analysis of peptide by supercritical fluid chromatography (CAT#: STEM-CT-0017-LJX)

Introduction

The amino group of one amino acid can be condensed with the carboxyl group of another amino acid to form a peptide, and the resulting amide group is called a peptide bond in protein chemistry. The molecule of amino acid is the smallest, and the protein is the largest. Two or more amino acids are dehydrated and condensed to form a number of peptide bonds to form a peptide chain. Multiple peptide chains are folded at multiple levels to form a protein molecule.




Principle

Supercritical fluid is a substance that has both gaseous and liquid properties above the critical point. Supercritical fluids have the advantages of high diffusion coefficient, low viscosity, adjustable solubility and high vapor phase density, so they can provide efficient mass spectrometry ionization and separation results.
Supercritical fluid chromatography (SFC) is an efficient separation technique that uses supercritical fluid as a mobile phase. The samples are packed into short tubes or SPE columns, and the samples are compressed and regulated by supercritical fluid to obtain good solubility. The sample components are then separated by column interaction, thus achieving the separation of different compounds.

Applications

For efficient separation of substances
Widely used in biology, chemistry, environmental protection and other fields

Procedure

1. Sample injection
2. The high pressure pump increases the pressure of the sample and mobile phase
3. The sample and mobile phase enter the chromatographic column
4. Flow limiter assists sample separation

Materials

• Sample Type:
Peptide

Notes

1. In the process of separation, the control of pressure and temperature of supercritical fluid is very important, which affects the properties and separation efficiency of supercritical fluid.
2. In addition, the selection of the appropriate column, packing and moving equivalent factors will also affect the separation effect.