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Volume 82, Issue 3 (Feb 2010)


Allium chemistry: Use of new instrumental techniques to “see” reactive organosulfur species formed upon crushing garlic and onion

Eric Block
  • Corresponding author
  • Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA
/ Robert B. Cody
  • Corresponding author
  • JEOL USA, Inc., 11 Dearborn Road, Peabody, MA 01960, USA
/ A. John Dane
  • Corresponding author
  • JEOL USA, Inc., 11 Dearborn Road, Peabody, MA 01960, USA
/ Robert Sheridan
  • Corresponding author
  • New York State Department of Agriculture and Markets, Food Laboratory Division, Albany, NY 12235, USA
/ Abith Vattekkatte
  • Corresponding author
  • Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA
/ Kai Wang
  • Corresponding author
  • Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA
Published Online: 2010-02-14 | DOI: https://doi.org/10.1351/PAC-CON-09-08-12

Three different instrumental methods have been used to examine the organosulfur chemistry of intact and cut garlic and onions: X-ray fluorescence spectroscopic imaging (XFS), direct analysis in real time (DART) mass spec-trometry, and ultra-performance liquid chromatography-(Ag+)-coordination ion spray mass spectrometry (UPLC–(Ag+)CIS–MS). The first technique has been used to map the location of different chemical forms of sulfur in intact and damaged onion cells, the second technique, to identify the reactive, volatile sulfur compounds formed on cutting the plants, and the third technique, to identify members of families of polysulfides found in the distilled oil of garlic.

Keywords: direct analysis in real time; garlic; mass spectrometry; onion; sulfur compounds; ultra-performance liquid chromatography; X-ray fluorescence spectroscopy


International Conference on Heteroatom Chemistry (ICHAC-9), International Conference on Heteroatom Chemistry, ICHAC, Heteroatom Chemistry, 9th, Oviedo, Spain, 2009-06-30–2009-07-04


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About the article

Published Online: 2010-02-14

Published in Print: 2010-02-14

Citation Information: Pure and Applied Chemistry, ISSN (Online) 1365-3075, ISSN (Print) 0033-4545, DOI: https://doi.org/10.1351/PAC-CON-09-08-12. Export Citation

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