[Heat-induced decomposition of disaccharide Amadori compounds in quasi-water-free reaction conditions].
The thermally induced decomposition of disaccharide Amadori compounds has been compared to those of monosaccharide ones under almost water-free conditions. The structure of the synthesized maltulosyl compound has been proved to be 4C1-alpha-D-glucopyranosyl- (1----4)-2C5-beta-D-fructopyranosylglycine by 1H- and 13C-NMR spectroscopy. The decomposition of Amadori compounds has been used to study the kinetics of the browning reaction. Compared to fructosylglycine and maltotriulosylglycine, the browning of the disaccharide is faster. Curie point pyrolysis at 300 degrees C and investigation of the pyrolysate by gas chromatography/mass spectrometry have shown that the disaccharide component influences the thermal process. Furanes and furanones have been detected as predominant degradation products, the main one being 2(5H)-furanone. For the first time, we suggest a reaction pathway for the formation of these products via the Maillard reaction which includes 1,6-anhydroglucose.
Kroh
L
L
Humboldt-Universität zu Berlin, Institut für Lebensmittelwissenschaft und Mikrobiologie, Bundesrepublik Deutschland.
Schrödter
R
R
Mügge
C
C
Westphal
G
G
Baltes
W
W
Schröder
R
R
D004187:Disaccharides / Q000378:metabolism*; D005998:Glycine / Q000031:analogs & derivatives / Q000737:chemistry / Q000378:metabolism; D006358:Hot Temperature; D007700:Kinetics; D015416:Maillard Reaction; D008320:Maltose / Q000031:analogs & derivatives / Q000737:chemistry / Q000378:metabolism
D004187:Disaccharides; C076405:1-desoxy-1-glycinomaltose; C033188:fructosyl-glycine; D008320:Maltose; D005998:Glycine
Thermisch induzierter Abbau von Disaccharid-Amadori-Verbindungen in quasi wasserfreiem Reaktionsmilieu.