By solid phase microextraction - Gas Chromatography - mass spectrometry (SPME-GC-MS) technique against acid and methionine bad blood (ASA-Met) model of the reaction products were identified, studied the effect of Fe2+ on the formation of flavor compounds in the model reaction. 27 flavour compounds of furan, pyrazine, thiophene, sulfur and other compounds, were identified, of which, sulfur-containing compounds such as aliphatic cyclic sulfides, sulfide, pyrazine is the main flavor components. Fe2+ was added to the model in the system, on one hand the about adding some sulfur compounds yield, pyrazine compounds significantly increase; on the other hand, Thiophenes significantly reduced compounds or even disappear. This shows that in the model reaction, Fe2+ promotes the thermal degradation of Met, at the same time, suggesting that Fe2+ as oxidant to promote NH3, NH3 and H2S to generate competitive reaction and ASA degradation products formed compounds containing nitrogen, resulting in reduced Thiophenes compounds yield.
