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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.
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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 | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | ||||
Publisher: | ELSEVIER SCIENCE INC | ||||
ISSN: | 1044-0305 | ||||
Official Date: | February 1996 | ||||
Dates: |
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Volume: | 7 | ||||
Number: | 2 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 173-181 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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