Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F11%3A00359831" target="_blank" >RIV/60077344:_____/11:00359831 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/11:00359831 RIV/60076658:12220/11:43881940

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum

Popis výsledku v původním jazyce

Two novel, cysteine derivatives were isolated from the bulbs of Allium stipitatum (Allium sub) 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-methyl thiomethyl)cysteine 4-oxide (marasmin) were found in the bulbs. The alliinase-mediated formation of pyridyl-containing compounds following disruption of A. stipitatum bulbs was studied by a combination of HPLC-MS, HPLC-PDA, DART-MS, and NMR techniques. No pyridyl-containing thiosulfinates are present in homogenized bulbs. Instead, various pyridine N-oxides such asN-hydroxypyridine-2(1H)-thione (pyrithione), 2-(methyldithio)pyridine N-oxide, 2-(methylthio) methyldithio]pyridine N-oxide, di(2-pyridyl) disulfide N-oxide, and di(2-pyridyl) disulfide N,N0-dioxide are reported.

Název v anglickém jazyce

Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum

Popis výsledku anglicky

Two novel, cysteine derivatives were isolated from the bulbs of Allium stipitatum (Allium sub) 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-methyl thiomethyl)cysteine 4-oxide (marasmin) were found in the bulbs. The alliinase-mediated formation of pyridyl-containing compounds following disruption of A. stipitatum bulbs was studied by a combination of HPLC-MS, HPLC-PDA, DART-MS, and NMR techniques. No pyridyl-containing thiosulfinates are present in homogenized bulbs. Instead, various pyridine N-oxides such asN-hydroxypyridine-2(1H)-thione (pyrithione), 2-(methyldithio)pyridine N-oxide, 2-(methylthio) methyldithio]pyridine N-oxide, di(2-pyridyl) disulfide N-oxide, and di(2-pyridyl) disulfide N,N0-dioxide are reported.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA400720706" target="_blank" >IAA400720706: Struktura skupin obsahujících křemík a J(29Si-13C) interakce měřené trojnou{1H, 13C}29Si NMR</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Agricultural and Food Chemistry

ISSN

0021-8561

e-ISSN

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Svazek periodika

59

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

5763-5770

Kód UT WoS článku

000290691300076

EID výsledku v databázi Scopus

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