Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stiptatum
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F11%3A43892756" target="_blank" >RIV/60461373:22330/11:43892756 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/jf200704n" target="_blank" >http://dx.doi.org/10.1021/jf200704n</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jf200704n" target="_blank" >10.1021/jf200704n</a>
Alternative languages
Result language
angličtina
Original language name
Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stiptatum
Original language description
Two novel, structurally unusual cysteine derivatives were isolated from the bulbs of Allium stipitatum (Allium subg. Melanocrommyum) and shown to be S-(2-pyridyl)cysteine N-oxide and S-(2-pyridyl)glutathione N-oxide. The former compound is the first example of a naturally occurring alliinase substrate that contains an N-oxide functionality instead of the S-oxide group. In addition, S-methylcysteine S-oxide (methiin) and S-(methylthiomethyl)cysteine 4-oxide (marasmin) were found in the bulbs. Presented data suggest that the previously reported identification of S-(2-pyridyl)cysteine S-oxide was most likely erroneous. The alliinase-mediated formation of pyridyl-containing compounds following disruption of A. stipitatum bulbs was studied by a combinationof HPLC-MS, HPLC-PDA, DART-MS, and NMR techniques. It was found that no pyridyl-containing thiosulfinates are present in homogenized bulbs in detectable quantities. Instead, various pyridine N-oxide derivatives are formed, including N-hyd
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GM - Food industry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Agricultural and Food Chemistry
ISSN
0021-8561
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
5763-5770
UT code for WoS article
000290691300076
EID of the result in the Scopus database
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