What is it about?
A clear differentiation between the aroma p recursorcompounds was only possible by combining both LC and tandem MS (MS/MS). Indeed, by applying a series of energy resolved MS/MS experiments and monitoring both positive and negative ions, a structural characterization of the analytes was achieved. The proposed LC-MS/MS approach provided the profile of monoterpenol-diglycosides and allowed the identification of a series of isobaric terpene-diglycosides in grape.
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Why is it important?
Monoterpene-glycosides are important aroma precursors that, undergo hydrolysis, confer intense floral notes to the wines. Therefore, the knowledge of the nature of the sugar residues and the structure of these molecules is of great interest.
Perspectives
The obtained results showed a significant difference between the content of the nonoterpene-glycosides in grape samples collected in two different vintages. Therefore, a quali-quantitative characterization of wine aroma precursor compounds is possible.
Gianluca Bartolucci
Universita degli Studi di Firenze
Read the Original
This page is a summary of: Combining liquid chromatography and tandem mass spectrometry approaches to the study of monoterpene glycosides (aroma precursors) in wine grape, Journal of Mass Spectrometry, July 2018, Wiley,
DOI: 10.1002/jms.4212.
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