| Zugriffsnummer | 39726 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Structural characterization of melanoidin formed from D-glucose and L-alanine at different temperatures applying FTIR, NMR, EPR, and MALDI-ToF-MS |
| Autor(in); Institution |
Mohsin, Ghassan Faisal; Institut für Lebensmitteltechnologie und Lebensmittelchemie, Fachgruppe Lebensmittelchemie und Analytik, Technische Universität Berlin, Berlin, GERMANY
Schmitt, Franz-Josef; Institut für Chemie, Max-Volmer-Labor für Biophysikalische Chemie, Technische Universität Berlin, Berlin, GERMANY
Kanzler, Clemens; Institut für Lebensmitteltechnologie und Lebensmittelchemie, Fachgruppe Lebensmittelchemie und Analytik, Technische Universität Berlin, Berlin, GERMANY
Epping, Jan Dirk; Institut für Chemie, Fachgruppe Anorganische und Analytische Chemie, Technische Universität Berlin, Berlin, GERMANY
Flemig, Sabine; BAM Bundesanstalt für Materialforschung und -prüfung, Berlin, GERMANY
Hornemann, Andrea; 7.2, Kryophysik und Spektrometrie, PTB-Berlin
|
| Quelle/Jahr | Food Chemistry: 245 (2018), 4, 761 - 767 |
| ISSN | 0308-8146 (PRINT) ; 1873-7072 (ONLINE) |
| DOI | |
| Verlag | Amsterdam [u.a.]: Elsevier |
| Freie Schlagworte | Melanoidin ; Maillard reaction ; FTIR spectroscopy ; EPR spectroscopy ; NMR spectroscopy ; MALDI- ToF-MS ; b-glucose ; L-alanine |
| Zusammenfassung | The aim of this study was to identify specific chemical bonds and characteristic structures in melanoidins formed from D-glucose and L-alanine between 130 and 200 °C. The results might be used to control the type and amount of melanoidin produced during food processing. For this purpose, complementary techniques, such as FTIR, NMR, EPR, and ALDI-ToF, were employed. At 160 °C color, solubility and UV/Vis absorption change characteristically and consequently, structural transformations could be observed in FTIR and NMR spectra. For example, sharp signals of N-H, C-N, and C-H oscillations in the L-alanine spectrum are prone to inhomogeneous broadening in melanoidins prepared above 150 °C. These changes are caused due to formation of heterogeneous macromolecular structures and occur during condensation reactions that lead to an increasing loss of water from the melanoidins with increasing temperatures. Additionally, MALDI-ToF-MS indicates the polymerization of glyoxal/glyoxylic acid and EPR shows the formation of radical structures. |
Zitierung
Mohsin, G. F., Schmitt, F.-J., Kanzler, C., Epping, J. D., Flemig, S., & Hornemann, A. (2018). Structural characterization of melanoidin formed from D-glucose and L-alanine at different temperatures applying FTIR, NMR, EPR, and MALDI-ToF-MS. Food Chemistry, 245(4), 761–767. https://doi.org/10.1016/j.foodchem.2017.11.115