An integrated fingerprinting and kinetic approach to accelerated shelf-life testing of chemical changes in thermally treated carrot puree. (15th July 2015)

• Record Type: Journal Article
• Authors: Kebede, Biniam T.; Grauwet, Tara; Magpusao, Johannes; Palmers, Stijn; Michiels, Chris; Hendrickx, Marc; Loey, Ann Van
• Is Part Of: Food chemistry. Volume 179(2015)
• Page Start: 94
• Page End: 102
• Publication Date: 2015-07-15
• Subjects: Thermal sterilisation -- Carrot puree -- Accelerated shelf-life testing -- Headspace GC–MS fingerprinting -- Kinetic modelling -- Chemical reactions; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2015.01.074
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: A fingerprinting-kinetics strategy enabled a better insight into shelf-life changes. The volatile fraction of sterilised carrot puree clearly changes during shelf-life. The amount of Strecker aldehydes increased during storage. Terpene, fatty acid derivatives and sulphur compounds decreased during storage. Abstract: 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, α-terpinolene, β-pinene, α-terpineol and octanal were identified as potential markers for ASLT.