Ultra-high-performance liquid chromatography charge transfer dissociation mass spectrometry (UHPLC-CTD-MS) as a tool for analyzing the structural heterogeneity in carrageenan oligosaccharides

Ultra-high-performance liquid chromatography (UHPLC) with charge transfer dissociation mass spectrometry (CTD-MS) is presented for the analysis of a mixture of complex sulfated oligosaccharides. The mixture contained kappa ( κ ), iota ( ι ), and lambda ( λ ) carrageenans that contain anhydro bridges...

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Veröffentlicht in:Analytical and bioanalytical chemistry 2022-01, Vol.414 (1), p.303-318
Hauptverfasser: Mendis, Praneeth M., Sasiene, Zachary J., Ropartz, David, Rogniaux, Hélène, Jackson, Glen P.
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Sasiene, Zachary J.
Ropartz, David
Rogniaux, Hélène
Jackson, Glen P.
description Ultra-high-performance liquid chromatography (UHPLC) with charge transfer dissociation mass spectrometry (CTD-MS) is presented for the analysis of a mixture of complex sulfated oligosaccharides. The mixture contained kappa ( κ ), iota ( ι ), and lambda ( λ ) carrageenans that contain anhydro bridges, different degrees of sulfation ranging from one to three per dimer, different positioning of the sulfate groups along the backbone, and varying degrees of polymerization (DP) between 4 and 12. Optimization studies using standard mixtures of carrageenans helped establish the optimal conditions for online UHPLC-CTD-MS/MS analysis. Optimization included (1) UHPLC conditions; (2) ion source conditions, such as the capillary voltage, drying gas and nebulizing gas temperature, and flow rate; and (3) CTD-MS conditions, including data-dependent CTD-MS. The UHPLC-CTD results were contrasted with UHPLC-CID results of the same mixture on the same instrument. Whereas CID tends to produce B/Y and C/Z ions with many neutral losses, CTD produced more abundant A/X ions and less abundant neutral losses, which enabled more confident structural detail. The results demonstrate that He-CTD is compatible with the timescale of UHPLC and provides more structural information about carrageenans compared to state-of-the-art methods like UHPLC-CID analysis.
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subjects ABCs 20th Anniversary
Analysis
Analytical Chemistry
Biochemistry
Carbohydrate Conformation
Carrageenan
Carrageenan - chemistry
Carrageenans
Carrageenin
Characterization and Evaluation of Materials
Charge transfer
Chemical Sciences
Chemistry
Chemistry and Materials Science
Chromatography
Chromatography, High Pressure Liquid - methods
Dimers
Drying
Flow rates
Flow velocity
Food Science
Gas temperature
Heterogeneity
High performance liquid chromatography
Ion sources
Ions
Laboratory Medicine
Liquid chromatography
Mass spectrometry
Mass Spectrometry - methods
Mass spectroscopy
Methods
Monitoring/Environmental Analysis
Oligosaccharides
Oligosaccharides - chemistry
Optimization
Paper in Forefront
Rhodophyta - chemistry
Scientific imaging
Spectroscopy
Sulfation
title Ultra-high-performance liquid chromatography charge transfer dissociation mass spectrometry (UHPLC-CTD-MS) as a tool for analyzing the structural heterogeneity in carrageenan oligosaccharides
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