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| Description
| - Precursors involved in the formation of pink and green-blue pigments during onion and garlic processing, respectively, have been studied. It has been confirmed that the formation of both pigments is of a very similar nature, with (E)-S-(1-propenyl)cysteine sulfoxide (isoalliin) serving as the primary precursor. Upon disruption of the tissue, isoalliin and other S-alk(en)ylcysteine sulfoxides are enzymatically cleaved, yielding prop-1-enylcontaining thiosulfinates [CH3CH=CHS(O)SR; R = methyl, allyl, propyl, 1-propenyl], among others. The latter compounds subsequently react with amino acids to produce the pigments. Whereas the onion and leek-related propyl, prop-1-enyl and methyl derivatives can form pink, pink-red and magenta compounds, those containing the allyl group yield dark blue products after reacting with glycine at pH 5.0.
- Precursors involved in the formation of pink and green-blue pigments during onion and garlic processing, respectively, have been studied. It has been confirmed that the formation of both pigments is of a very similar nature, with (E)-S-(1-propenyl)cysteine sulfoxide (isoalliin) serving as the primary precursor. Upon disruption of the tissue, isoalliin and other S-alk(en)ylcysteine sulfoxides are enzymatically cleaved, yielding prop-1-enylcontaining thiosulfinates [CH3CH=CHS(O)SR; R = methyl, allyl, propyl, 1-propenyl], among others. The latter compounds subsequently react with amino acids to produce the pigments. Whereas the onion and leek-related propyl, prop-1-enyl and methyl derivatives can form pink, pink-red and magenta compounds, those containing the allyl group yield dark blue products after reacting with glycine at pH 5.0. (en)
- Byly studovány prekurzory podílející se na tvorbě růžového a zelenomodrého zbarvení vznikajícího během zpracování cibule a česneku. Bylo zjištěno, že oba procesy jsou velmi podobného charakteru, přičemž klíčovým prekurzorem je (E)-S-(1-propenyl)cysteinsulfoxid (isoalliin). Při porušení rostlinného pletiva dochází k enzymovému rozkladu isoalliinu a dalších S-alk(en)ylcysteinsulfoxidů za tvorby 1-propenylthiosulfinátů [CH3CH=CHS(O)SR; R = methyl, allyl, propyl, 1-propenyl]. Tyto thiosulfináty následně reagují s aminokyselinami za vzniku barevných látek. Zatímco propyl, 1-propenyl a methylthiosulfináty tvoří růžové, červenorůžové popř. fialové sloučeniny, thiosulfináty obsahující allylovou skupinu generují modré látky při reakci s glycinem (pH 5,0). (cs)
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| Title
| - Allium Discoloration: The Nature of Onion Pinking and Garlic Greening
- Allium Discoloration: The Nature of Onion Pinking and Garlic Greening (en)
- Allium Discoloration: The Nature of Onion Pinking and Garlic Greening (cs)
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| skos:prefLabel
| - Allium Discoloration: The Nature of Onion Pinking and Garlic Greening
- Allium Discoloration: The Nature of Onion Pinking and Garlic Greening (en)
- Allium Discoloration: The Nature of Onion Pinking and Garlic Greening (cs)
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| skos:notation
| - RIV/60461373:22330/04:00019607!RIV08-GA0-22330___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22330/04:00019607
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Allium; garlic; onion; discoloration; pigment (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Czech Journal of Food Science
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kubec, Roman
- Velíšek, Jan
- Musah, R. A.
- Hrbáčová, Marcela
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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