Reactions of reductones and methylene-active compounds with Maillard carbonyl intermediates.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F09%3A00022361" target="_blank" >RIV/60461373:22330/09:00022361 - 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

Reactions of reductones and methylene-active compounds with Maillard carbonyl intermediates.

Popis výsledku v původním jazyce

The reducing activity of principal low-molecular non-nitrogen Maillard reducing intermediates formed in binary mixtures with several kinds of important Maillard carbonyl products was evaluated. Only norfuraneol and 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (DDMP) are able to yield active addition products. It was found that the tested compounds with reactive methylene group are notably transformed to reducing products only when reacted with cyclic compounds possessing reactive formyl group, suchas derivatives of furan-2-carbaldehyde, and also with -hydroxycarbonyl products of sugar fragmentation such as glycolaldehyde and glyceraldehyde. Several active condensation products were isolated and identified, such as stereoisomers of 2 [(2-furyl)methylidene]-4 hydroxy-5-methyl-2H-furan-3-one formed from norfuraneol and furan 2 carbaldehyde, 4 hydroxy-2-[2-(5-hydroxymethylfuryl)methylidene]-5-methyl-2H-furan-3-one (norfuraneol and 5-hydroxymethylfuran-2-carbaldehyde) and 4 hydroxy-5-

Název v anglickém jazyce

Reactions of reductones and methylene-active compounds with Maillard carbonyl intermediates.

Popis výsledku anglicky

The reducing activity of principal low-molecular non-nitrogen Maillard reducing intermediates formed in binary mixtures with several kinds of important Maillard carbonyl products was evaluated. Only norfuraneol and 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (DDMP) are able to yield active addition products. It was found that the tested compounds with reactive methylene group are notably transformed to reducing products only when reacted with cyclic compounds possessing reactive formyl group, suchas derivatives of furan-2-carbaldehyde, and also with -hydroxycarbonyl products of sugar fragmentation such as glycolaldehyde and glyceraldehyde. Several active condensation products were isolated and identified, such as stereoisomers of 2 [(2-furyl)methylidene]-4 hydroxy-5-methyl-2H-furan-3-one formed from norfuraneol and furan 2 carbaldehyde, 4 hydroxy-2-[2-(5-hydroxymethylfuryl)methylidene]-5-methyl-2H-furan-3-one (norfuraneol and 5-hydroxymethylfuran-2-carbaldehyde) and 4 hydroxy-5-

Druh

D - Stať ve sborníku

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

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings EuroFoodChem XV - Food for the future - the contribution of chemistry to improvement of food quality

ISBN

978-87-993033-5-9

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

University of Copenhagen

Místo vydání

Copenhagen

Místo konání akce

Copenhagen, Denmark

Datum konání akce

5. 7. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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