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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal article

Anthocyanidins, Proanthocyanidins, and Anthocyanins Profiling in Wine Lees by Solid-Phase Extraction–Liquid Chromatography Coupled to Electrospray Ionization Tandem Mass Spectrometry with Data-Dependent Methods  [2013]

Torre, M.P. Delgado de la; Ferreiro-Vera, C.; Priego-Capote, F.; Castro, M.D. Luque de;

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A method has been developed to study the content of anthocyanidins, proanthocyanidicins, and anthocyanins in wine lees, an abundant byproduct from wineries. Detection/quantitation of the target compounds was carried out by a hyphenated system consisting of a solid-phase extraction workstation (Prospekt-2 unit) online coupled to a liquid chromatograph-triple-quadrupole tandem mass spectrometer (LC-MS/MS), where standards were used for identification/quantitation of both anthocyanidins and proanthocyanidins. Owing to the lack of anthocyanins standards, advantages from the use of data-dependent methods were taken for their identification and confirmatory analysis. Combination of the scanning methods (viz. product-ion, precursor-ion, and neutral-loss scanning) allowed identifying five different anthocyanins present in wine residues. The results thus obtained have been validated by complementary analysis of the extracts using LC-TOF/MS in high-resolution mode. Quantitation of the monitored compounds was supported on selected reaction monitoring (SRM) and calibration curves run with standards of anthocyanidins and proanthocyanidins.

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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2014
Volume:
61
Issue:
51
Start Page:
12539
End Page:
12548
All titles:
" Anthocyanidins, Proanthocyanidins, and Anthocyanins Profiling in Wine Lees by Solid-Phase Extraction–Liquid Chromatography Coupled to Electrospray Ionization Tandem Mass Spectrometry with Data-Dependent Methods "

From the journal

Journal of agricultural and food chemistry

ISSN : 0021-8561