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Comparison of high- and low-energy collision-induced. Dissociation tandem mass spectrometry in the analysis of glycoalkaloids and their aglycons
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UNSPECIFIED (1996) Comparison of high- and low-energy collision-induced. Dissociation tandem mass spectrometry in the analysis of glycoalkaloids and their aglycons. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 7 (2). pp. 173-181. ISSN 1044-0305
Full text not available from this repository.Abstract
Four aglycons (tomatidine, demissidine, solanidine, and solasodine) and three glycoalkaloids (alpha-tomatine, alpha-chaconine, and alpha-solanine) have been analyzed by positive ion liquid sec ondary ion high-energy and low-energy collision-induced dissociation (CID) tandem mass spectrometry, performed on a four-sector (EBEB) and a hybrid (EBQQ) instrument, respectively. Both high- and low-energy collision-induced dissociation mass spectra of [M + H](+) ions of these compounds provided structural information that aided the characterization of the different aglycons and of the carbohydrate sequence and linkage sites in the glycoalkaloids. Low-energy CID favors charge-driven fragmentation of the aglycon rings, whilst high-energy CID spectra are more complex and contain additional ions that appear to result from charge-remote fragmentations, multiple cleavages, or complex charge-driven rearrangements. With respect to the structural characterization of the carbohydrate part, low-energy CID fragmentations of sugar residues in the glycoalkaloids generate Y-n(+) ions and some low intensity Z(n)(+) ions; the high-energy spectra also exhibit strong (1,5)X(n)(+) ions, formed by multiple cleavage of the sugar ring, and significant Z(n)(+) ions.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
| Journal or Publication Title: | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY |
| Publisher: | ELSEVIER SCIENCE INC |
| ISSN: | 1044-0305 |
| Date: | February 1996 |
| Volume: | 7 |
| Number: | 2 |
| Number of Pages: | 9 |
| Page Range: | pp. 173-181 |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/19027 |
Data sourced from Thomson Reuters' Web of Knowledge
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