Studio dei monoterpeni glicosidi dell’uva mediante metabolomica di “Suspect Screening”.

Translated title of the contribution: [Autom. eng. transl.] Study of grape glycoside monoterpenes by means of "Suspect Screening" metabolomics.

Luigi Bavaresco, M. De Rosso, A Panighel, A Dalla Vedova, F De Marchi, R. Flamini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

[Autom. eng. transl.] Recently, a method was developed for the study of grape and wine metabolomics by LC / QTOF analysis and "Suspect screening analysis" approach. A new electronic database - called GrapeMetabolomics - has been built containing the molecular formulas of about a thousand putative grape and wine compounds, present in literature and found in other databases. On each sample studied a subsequent processing of the raw data is performed with an 'untargeted' approach, in order to obtain a further list of possible molecular formulas not present in GrapeMetabolomics. When the search on other electronic databases provides the identification of a new compound of potential enological interest, this is inserted into the database with the respective chromatographic retention time. Consequently, by increasing the number of samples studied, it is possible to further expand the database. In grape extracts, depending on the variety, this approach allowed to identify the molecular formulas corresponding to 320-450 compounds, and to obtain a complete and detailed profile of the chemical composition of the samples in only two analyzes. The method was also focused on the study of single classes of compounds, such as stilbenes and glycosylated terpenols of grapes. The latter are the aromatic precursors which, with vinification, release the floral and fruity aromas typical of aromatic varieties, and which represent the aromatic potential of these grapes. With this approach it is therefore possible to identify and directly study the glycosylated aromatic precursors in grapes and wines, without using the hydrolytic artifacts provided by the traditional methods that can alter the profiles of the samples. Here we present the study of the profiles of the glycosylated terpenols of three varieties of aromatic and semi-aromatic grapes: white Moscato, Riesling Italico and Glera.
Translated title of the contribution[Autom. eng. transl.] Study of grape glycoside monoterpenes by means of "Suspect Screening" metabolomics.
Original languageItalian
Title of host publication36th OIV World Congress
PagesN/A
Publication statusPublished - 2013
EventOIV World Congress - Bucharest, Romania
Duration: 2 Jun 20137 Jun 2014

Conference

ConferenceOIV World Congress
CityBucharest, Romania
Period2/6/137/6/14

Keywords

  • GrapeMetabolomics
  • metabolomica

Fingerprint

Dive into the research topics of '[Autom. eng. transl.] Study of grape glycoside monoterpenes by means of "Suspect Screening" metabolomics.'. Together they form a unique fingerprint.

Cite this