Flavor Profiling Using Comprehensive Mass Spectrometry Analysis of Metabolites in Tomato Soups
Simon Leygeber1, Justus L Grossmann2, Carmen Diez-Simon3
1Leiden Academic Centre for Drug Research, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
Metabolites
|December 23, 2022
Summary
This study combined sensory analysis and metabolomics to identify key flavor compounds in tomato soup. Molecular profiling revealed specific metabolites linked to umami, garlic, and onion notes, aiding data-driven food development.
Area of Science:
- Food Science
- Analytical Chemistry
- Sensory Science
Background:
- Trained sensory panels are standard for food evaluation but lack data-driven insights for product development.
- Molecular profiling offers a potential data-driven approach to understand food flavor.
Purpose of the Study:
- To evaluate a molecular-based strategy for predicting sensory attributes in tomato soups.
- To identify specific metabolites correlating with distinct flavor profiles.
Main Methods:
- Analysis of 27 tomato soups using sensory panels, liquid chromatography-mass spectrometry (LC-MS), and gas chromatography-mass spectrometry (GC-MS).
- Development of partial least squares (PLS) models to predict 26 sensory attributes from metabolite data.
- Verification of high-impact sensory markers using tandem mass spectrometry (MS/MS).
Main Results:
- Identification of key metabolites, including dipeptides and sulfur-containing modified amino acids, that drive flavor separation.
- Correlation of specific metabolites with sensory attributes like umami, garlic-like, and onion-like flavors.
- Confirmation of methionyl-proline and asparagine-leucine as significant flavor markers.
Conclusions:
- Combining sensory data with metabolomics provides a powerful approach for flavor perception research in complex food matrices.
- This integrated strategy enables data-driven steering of food product development based on molecular flavor markers.
- The study successfully identified and verified molecular contributors to specific sensory characteristics in tomato soup.
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