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Fast single run of vanilla fingerprint markers on microfluidic‐electrochemistry chip for confirmation of common frauds
Author(s) -
Ávila Mónica,
Zougagh Mohammed,
Escarpa Alberto,
Ríos Ángel
Publication year - 2009
Publication title -
electrophoresis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.666
H-Index - 158
eISSN - 1522-2683
pISSN - 0173-0835
DOI - 10.1002/elps.200900238
Subject(s) - vanillin , vanillic acid , fingerprint (computing) , chromatography , analyte , chemistry , food science , computer science , artificial intelligence
A new strategy based on the fast separation of the fingerprint markers of Vanilla planifolia extracts and vanilla‐related samples on microfluidic‐electrochemistry chip is proposed. This methodology allowed the detection of all required markers for confirmation of common frauds in this field. The elution order was strategically connected with sequential sample screening and analyte confirmation steps, where first ethyl vanillin was detected to distinguish natural from adultered samples; second, vanillin as prominent marker in V. planifolia , but frequently added in its synthetic form; and third, the final detection of the fingerprint markers ( p ‐hydroxybenzaldehyde, vanillic acid, and p ‐hydroxybenzoic acid) of V. planifoli a with confirmation purposes. The reliability of the proposed methodology was demonstrated in the confirmation the natural or non‐natural origin of vanilla in samples using V. planifolia extracts and other selected food samples containing this flavor.