Vznik hydroxykarbonylových a dikarbonylových sloučenin při degradaci monosacharidů

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F07%3A00019257" target="_blank" >RIV/60461373:22330/07:00019257 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides

Popis výsledku v původním jazyce

The formation of hydroxycarbonyl and dicarbonyl compounds from monosaccharides (glucose, fructose, arabinose, glyceraldehyde, and 1,3-dihydroxyacetone) was studied in three different model systems comprising an aqueous and alkaline solution of potassiumperoxodisulfate (K2S2O8), and a solution of sodium hydroxide, respectively. In total, six hydroxycarbonyl (in the form of O-ethyloximes) and six dicarbonyl compounds (as quinoxaline derivatives) were identified by GC/MS. Acetol, glycolaldehyde, 1,3-dihydroxyacetone, methylglyoxal, and glyoxal were the most abundant low molecular weight carbonyls. Within the model systems studied, the yield of hydroxycarbonyl and dicarbonyl compounds was 0.32-4.90% (n/n) and 0.35-9.81% (n/n), respectively. The yield of dicarbonyls was higher than that of hydroxycarbonyls only in aqueous solution of K2S2O8 and in the other two model systems an inverse ratio of these two carbonyls was found. For the first time, ethylglyoxal was identified as a sugar degrad

Název v anglickém jazyce

Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides

Popis výsledku anglicky

The formation of hydroxycarbonyl and dicarbonyl compounds from monosaccharides (glucose, fructose, arabinose, glyceraldehyde, and 1,3-dihydroxyacetone) was studied in three different model systems comprising an aqueous and alkaline solution of potassiumperoxodisulfate (K2S2O8), and a solution of sodium hydroxide, respectively. In total, six hydroxycarbonyl (in the form of O-ethyloximes) and six dicarbonyl compounds (as quinoxaline derivatives) were identified by GC/MS. Acetol, glycolaldehyde, 1,3-dihydroxyacetone, methylglyoxal, and glyoxal were the most abundant low molecular weight carbonyls. Within the model systems studied, the yield of hydroxycarbonyl and dicarbonyl compounds was 0.32-4.90% (n/n) and 0.35-9.81% (n/n), respectively. The yield of dicarbonyls was higher than that of hydroxycarbonyls only in aqueous solution of K2S2O8 and in the other two model systems an inverse ratio of these two carbonyls was found. For the first time, ethylglyoxal was identified as a sugar degrad

Druh

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

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

<a href="/cs/project/OC%20125" target="_blank" >OC 125: Charakterizace a vlastnosti významných produktů Maillardovy reakce</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

2007

Kód důvěrnosti údajů

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

Název periodika

Czech Journal of Food Science

ISSN

1212-1800

e-ISSN

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Svazek periodika

25

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

119-130

Kód UT WoS článku

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EID výsledku v databázi Scopus

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