Identification of soft drinks

19 January 2023

LCGC: The ColumnThe Column - Drinks

This article discusses how immersive sportive extraction coupled with comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry (GCxGC–TOF MS) was used to compare flavour profiles from popular brand soft drinks with those of imitation products.

Unlike counterfeit goods, replica and imitation products are legal because they do not use the branded product’s trademark. In the food and beverage industry, imitation products attempt to mimic the taste experience of popular branded products.

However, flavour profiles are extremely complex and consist of a broad range of chemical classes, the combination of which ultimately determines the consumer’s preference for a particular brand. It is important to be able to confidently identify these volatiles during product development, as well as in quality and authenticity studies.

The work detailed in this article demonstrates an end‑to‑end nontarget workflow for aroma profiling of food and beverages, comprising fully automated immersive sampling of wide‑ranging aroma-active volatiles using high-capacity sorptive extraction.

Enhanced separation by GCxGC using consumable-free flow modulation obtained comprehensive aroma profiles. Sensitive detection and confident identification of analytes were achieved using TOF‑MS. Chemometrics offered automated workflows for alignment and comparison of complex chromatograms.



Download article: Comparing the Flavour Profiles of Soft Drink Brands Using Immersive Sorptive Extraction, GCxGC–TOF-MS,and Chemometrics


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