"3"^^ . . . . "RIV/60461373:22330/07:00019257" . "Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides" . "[C2BBC1E8CAA6]" . "Novotn\u00FD, Ond\u0159ej" . "Vel\u00ED\u0161ek, Jan" . . . . "Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides"@en . "3" . "Vznik hydroxykarbonylov\u00FDch a dikarbonylov\u00FDch slou\u010Denin p\u0159i degradaci monosacharid\u016F; hydroxykarbonylov\u00E9 slou\u010Deniny, dikarbonylov\u00E9 slo\u010Deniny, monosacharidy, glukosa, fruktosa, arabinosa, glyceraldehyd, 1,3-dihydroxyaceton"@cs . "Cejpek, Karel" . . . . . . . . "Vznik hydroxykarbonylov\u00FDch a dikarbonylov\u00FDch slou\u010Denin p\u0159i degradaci monosacharid\u016F"@cs . "422384" . . "-hydroxycarbonyl compounds; -dicarbonyl compounds; monosaccharides; glucose; fructose; arabinose; glyceraldehyde; 1; 3-dihydroxyacetone"@en . . . . "25" . "Vznik hydroxykarbonylov\u00FDch a dikarbonylov\u00FDch slou\u010Denin p\u0159i degradaci monosacharid\u016F"@cs . . "CZ - \u010Cesk\u00E1 republika" . "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 potassium peroxodisulfate (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 degradation product an"@en . "3"^^ . "119-130" . "Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides"@en . "22330" . "12"^^ . "RIV/60461373:22330/07:00019257!RIV08-MSM-22330___" . "Formation of hydroxycarbonyl and dicarbonyl compounds during degradation of monosaccharides" . . . . "Czech Journal of Food Science" . . . "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 potassium peroxodisulfate (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 degradation product an" . . "P(OC 125), Z(MSM6046137305)" . "1212-1800" . .