title: An integrated fingerprinting and kinetic approach to accelerated shelf-life testing of chemical changes in thermally treated carrot puree.
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.
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1). Electronic address: BiniamTamiru.Kebede@biw.kuleuven.be.
authors.forename: Biniam T
authors.initials: BT
authors.lastname: Kebede
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1).
authors.forename: Tara
authors.initials: T
authors.lastname: Grauwet
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1).
authors.forename: Johannes
authors.initials: J
authors.lastname: Magpusao
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1).
authors.forename: Stijn
authors.initials: S
authors.lastname: Palmers
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1).
authors.forename: Chris
authors.initials: C
authors.lastname: Michiels
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1).
authors.forename: Marc
authors.initials: M
authors.lastname: Hendrickx
authors.affiliation: Centre for Food and Microbial Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 23 - Box 2457, 3001 Heverlee, Belgium(1). Electronic address: ann.vanloey@biw.kuleuven.be.
authors.forename: Ann Van
authors.initials: AV
authors.lastname: Loey
mesh_terms: D018552:Daucus carota / Q000737:chemistry*; D005511:Food Handling; D061353:Food Storage; D006358:Hot Temperature; D007700:Kinetics
keywords: Accelerated shelf-life testing; Carrot puree; Chemical reactions; Headspace GC–MS fingerprinting; Kinetic modelling; Thermal sterilisation