期刊
MEAT SCIENCE
卷 118, 期 -, 页码 108-116出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2016.03.029
关键词
Syringol; Oxidation products; Curing brine; Cured and heated meat; Simulated digestion; Ascorbic acid
资金
- Fritz-Ahrberg-Stiftung (Hannover, Germany)
In this study we developed new extraction and detection methods (using HPLC-UV and LC-MS), making it possible to analyze the smoke phenol syringol and its oxidation products nitrososyringol, nitrosyringol, and the syringol dimer 3,3',5,5'-tetramethoxy-1,1'-biphenyl-4,4'-diol, which were identified in heated meat for the first time. Preliminary brine experiments performed with different concentrations of ascorbic acid showed that high amounts of this antioxidant also resulted in almost complete degradation of syringol and to formation of the oxidation products when the brines were heated at low pH values. Heat treatment (80 degrees C) and subsequent simulated digestion applied to meat samples containing syringol, ascorbic acid and different concentrations of sodium nitrite produced 3,3',5,5'-tetramethoxy-1,1'-biphenyl-4,4'-diol even at a low nitrite level in the meat matrix, while nitroso- and nitrosyringol were isolated only after the digestion experiments. Increasing amounts of oxygen in the meat matrix decreased the syringol concentration and enhanced the formation of the reaction products in comparison to the samples without added oxygen. (C) 2016 Elsevier Ltd. All rights reserved.
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