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High-Performance Liquid Chromatography: Introduction

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:

Mass Spectrometry: Complex Analysis

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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High-Performance Liquid Chromatography: Instrumentation

High-Performance Liquid Chromatography: Instrumentation

High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.

High-Performance Liquid Chromatography: Types of Detectors

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The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas Chromatography–Mass Spectrometry (GC–MS)

Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
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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
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Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

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Total compositional analysis by high-performance liquid chromatography or gas-liquid chromatography.

¹University of California San Diego, La Jolla, California, USA.

Current Protocols in Molecular Biology

|February 12, 2008

Summary

Determining the monosaccharide composition of glycoproteins involves releasing individual sugars and then quantifying them. High-performance liquid chromatography with pulsed amperometric detection (HPAEC-PAD) is a key method for this carbohydrate analysis.

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Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry

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Area of Science:

Biochemistry
Analytical Chemistry
Glycobiology

Background:

Glycoproteins are crucial biomolecules with diverse functions.
Accurate determination of monosaccharide composition is essential for understanding glycoprotein structure-function relationships.

Purpose of the Study:

To outline a comprehensive method for analyzing the molar ratios of monosaccharide constituents in glycoproteins.
To detail the release and subsequent analysis of individual monosaccharides.

Main Methods:

Monosaccharide release via methanolysis, acid hydrolysis, or enzymatic methods.
Analysis of released monosaccharides using high-performance liquid chromatography (HPLC) with anion-exchange chromatography and pulsed amperometric detection (HPAEC-PAD).
Gas-liquid chromatography with flame ionization detection (GLC-FID) as an alternative analytical technique.

Main Results:

Successful separation, characterization, and quantitation of individual monosaccharides from complex mixtures.
Identification of monosaccharides confirmed by comparison with authentic standards.

Conclusions:

The described analytical workflow enables precise determination of glycoprotein monosaccharide composition.
HPAEC-PAD and GLC-FID are powerful tools for quantitative carbohydrate analysis in biochemical research.