An integrated fingerprinting and kinetic approach to accelerated shelf-life testing of chemical changes in thermally treated carrot puree

被引:27
作者
Kebede, Biniam T. [1 ]
Grauwet, Tara [1 ]
Magpusao, Johannes [1 ]
Palmers, Stijn [1 ]
Michiels, Chris [1 ]
Hendrickx, Marc [1 ]
Van Loey, Ann [1 ]
机构
[1] Katholieke Univ Leuven, Ctr Food & Microbial Technol, Dept Microbial & Mol Syst M2S, B-3001 Heverlee, Belgium
关键词
Thermal sterilisation; Carrot puree; Accelerated shelf-life testing; Headspace GC-MS fingerprinting; Kinetic modelling; Chemical reactions; PRESSURE HIGH-TEMPERATURE; STRECKER DEGRADATION; SENSORY ATTRIBUTES; FOOD QUALITY; IDENTIFICATION; VOLATILES; AROMA; L;
D O I
10.1016/j.foodchem.2015.01.074
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
To have a better understanding of chemical reactions during shelf-life, an integrated analytical and engineering toolbox: "fingerprinting-kinetics" was used. As a case study, a thermally sterilised carrot puree was selected. Sterilised purees were stored at four storage temperatures as a function of time. Fingerprinting enabled selection of volatiles clearly changing during shelf-life. Only these volatiles were identified and studied further. Next, kinetic modelling was performed to investigate the suitability of these volatiles as quality indices (markers) for accelerated shelf-life testing (ASLT). Fingerprinting enabled selection of terpenoids, phenylpropanoids, fatty acid derivatives, Strecker aldehydes and sulphur compounds as volatiles clearly changing during shelf-life. The amount of Strecker aldehydes increased during storage, whereas the rest of the volatiles decreased. Out of the volatiles, based on the applied kinetic modelling, myristicin, alpha-terpinolene, beta-pinene, alpha-terpineol and octanal were identified as potential markers for ASLT. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:94 / 102
页数:9
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