An 1H NMR-based metabolomic approach to compare the chemical profiling of retail samples of ground roasted and instant coffees

Nayelli Villalón-López, José I. Serrano-Contreras, Darío I. Téllez-Medina, L. Gerardo Zepeda

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

© 2018 Elsevier Ltd The present non-targeted 1H NMR-based fingerprinting approach along with multivariate analysis established differences between representative aqueous extracts of commercial ground roasted coffee (GRC) and instant (soluble) coffee (IC) samples. The latter were prepared either by spray drying or freeze drying. When comparing a total of 33 compounds between GRC and IC, the latter product contained a remarkable increase in 5-(hydroxymethyl)furfural and carbohydrates, as well as a clear decrease in trigonelline, N-methylpyridinium, caffeine, caffeoylquinic acids and 2-furylmethanol. Furthermore, the current protocol was able to detect the subtle chemical differences between spray-dried and freeze-dried IC. The aforementioned metabolites could serve as target molecules in the attempt to preserve, as much as possible, the organoleptic and nutraceutical properties of GRC during the industrial drying processes used in the production of the two commercial types of IC.
Original languageAmerican English
Pages (from-to)263-270
Number of pages235
JournalFood Research International
DOIs
StatePublished - 1 Apr 2018

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