Improved MALDI-TOF-MS analysis of partially depolymerised methyl cellulose by reducing end derivatisation

Dane Momcilovic, Gunnar Brinkmalm, Bengt Wittgren, Karl-Gustav Wahlund

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

1 Citering (SciVal)

Sammanfattning

The depolymerized methyl cellulose was analyzed, using improved MALDI-TOF-MS by reducing the end derivatization. The methyl cellulose was depolymerized to give methylated oligo-(1->4)-β-D-anhydroglucoses (M-oligo-AG). To reduce the errors during measurement of degree of substitution (DS), M-oligo-AG was derivatized with Girard's T reagent performed on an equimolar mixture of maltooligosaccharides. The GT-derivatized M-oligo-AG (GT-M-oligo-AG) formed singly charged molecular ions with peaks at m/z values 91 higher than the corresponding peaks of M-oligo-AG. The results show that for GT-M-oligo-AG the relative signal intensities for DP=1 and 2 were increased significantly.
Originalspråkengelska
Titel på gästpublikationProceedings 50th ASMS Conference on Mass Spectrmetry and Allied Topics
FörlagAmerican Society for Mass Spectrometry, Santa Fe, NM, 87505, United States
Sidor421-422
StatusPublished - 2002
EvenemangProceedings - 50th ASMS Conference on Mass Spectrometry and Allied Topics - Orlando, FL, USA
Varaktighet: 2002 jun 22002 jun 6

Konferens

KonferensProceedings - 50th ASMS Conference on Mass Spectrometry and Allied Topics
Land/TerritoriumUSA
OrtOrlando, FL
Period2002/06/022002/06/06

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)

Ämnesklassifikation (UKÄ)

  • Analytisk kemi

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