Effect of different combined mechanical and thermal treatments on the volatile fingerprint of a mixed tomato–carrot system. (January 2016)

• Record Type: Journal Article
• Authors: Koutidou, Maria; Grauwet, Tara; Acharya, Parag
• Is Part Of: Journal of food engineering. Volume 168(2016:Jan.)
• Page Start: 137
• Page End: 147
• Publication Date: 2016-01
• Subjects: Untargeted GC–MS profiling -- Fingerprinting approach -- Volatile organic compounds (VOC) -- Mixed vegetable system -- Tomato -- Carrot -- Vegetable processing -- Process marker identification; Food industry and trade -- Periodicals; Food -- Analysis -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Analyse -- Périodiques; Aliments -- Recherche -- Périodiques; 664.005
• DOI: 10.1016/j.jfoodeng.2015.07.028
• Languages: English
• ISSNs: 0260-8774

Abstract

Highlights: The effect of thermo-mechanical process on volatile profiles of a mixed vegetable puree was studied. Application of shear before heating resulted in higher levels of volatiles compared to heating before shear. Process type is predominating than process step. Changing process conditions of carrot showed higher impact than that of tomato in volatile profile. Abstract: The effect of volatile profiles of a mixed vegetable puree comprised of tomato and carrot due to different thermo-mechanical process conditions has been thoroughly investigated using an untargeted GC–MS chemical fingerprinting approach. This resulted in a selection of discriminative marker volatile compounds in mixed vegetable puree, which acting as the witness of the process footprint and can therefore be related to the quality changes like micro-structure, heat distribution, etc. Moreover, when individual component, in a mixed vegetable system, are processed together ('all-in-one processed') vis-a-vis processed separately and then mixed together ('split-stream processed') different extent of chemical and enzymatic reactions can potentially induce change in volatile profiles. This work showed the potential of different process types to generate distinct headspace profiles of a mixed tomato–carrot system. This consciousness can be a starting point for more targeted tailoring of the flavour of mixed tomato–carrot products.