MersV1, Main, Exploration, bibRecord, 002473

Deciphering the complexity of sainfoin (Onobrychis viciifolia) proanthocyanidins by MALDI-TOF mass spectrometry with a judicious choice of isotope patterns and matrixes.

Identifieur interne : 002473 ( Main/Exploration ); précédent : 002472; suivant : 002474

Deciphering the complexity of sainfoin (Onobrychis viciifolia) proanthocyanidins by MALDI-TOF mass spectrometry with a judicious choice of isotope patterns and matrixes.

Auteurs : Elisabetta Stringano [Royaume-Uni] ; Rainer Cramer ; Wayne Hayes ; Celia Smith ; Trevor Gibson ; Irene Mueller-Harvey

Source :

Analytical chemistry [ 1520-6882 ] ; 2011.

RBID : pubmed:21488615

Descripteurs français

KwdFr :
- Acétophénones (), Dimérisation, Fabaceae (), Glycosylation, Marquage isotopique, Proanthocyanidines (analyse), Spectrométrie de masse MALDI ().
MESH :
- analyse : Proanthocyanidines.
- Acétophénones, Dimérisation, Fabaceae, Glycosylation, Marquage isotopique, Spectrométrie de masse MALDI.

English descriptors

KwdEn :
- Acetophenones (chemistry), Dimerization, Fabaceae (chemistry), Glycosylation, Isotope Labeling, Proanthocyanidins (analysis), Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization (methods).
MESH :
- chemical , analysis : Proanthocyanidins.
- chemical , chemistry : Acetophenones.
- chemistry : Fabaceae.
- methods : Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization.
- Dimerization, Glycosylation, Isotope Labeling.

Abstract

Use of superdihydroxybenzoic acid as the matrix enabled the analysis of highly complex mixtures of proanthocyanidins from sainfoin (Onobrychis viciifolia) by MALDI-TOF mass spectrometry. Proanthocyanidins contained predominantly B-type homopolymers and heteropolymers up to 12-mers (3400 Da). Use of another matrix, 2,6-dihydroxyacetophenone, revealed the presence of A-type glycosylated dimers. In addition, we report here how a comparison of the isotopic adduct patterns, which resulted from Li and Na salts as MALDI matrix additives, could be used to confirm the presence of A-type linkages in complex proanthocyanidin mixtures. Preliminary evidence suggested the presence of A-type dimers in glycosylated prodelphinidins and in tetrameric procyanidins and prodelphinidins.

DOI: 10.1021/ac2003856
PubMed: 21488615

Affiliations:

Royaume-Uni

Le document en format XML

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<term>Isotope Labeling</term>
<term>Proanthocyanidins (analysis)</term>
<term>Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization (methods)</term>
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<front><div type="abstract" xml:lang="en">Use of superdihydroxybenzoic acid as the matrix enabled the analysis of highly complex mixtures of proanthocyanidins from sainfoin (Onobrychis viciifolia) by MALDI-TOF mass spectrometry. Proanthocyanidins contained predominantly B-type homopolymers and heteropolymers up to 12-mers (3400 Da). Use of another matrix, 2,6-dihydroxyacetophenone, revealed the presence of A-type glycosylated dimers. In addition, we report here how a comparison of the isotopic adduct patterns, which resulted from Li and Na salts as MALDI matrix additives, could be used to confirm the presence of A-type linkages in complex proanthocyanidin mixtures. Preliminary evidence suggested the presence of A-type dimers in glycosylated prodelphinidins and in tetrameric procyanidins and prodelphinidins.</div>
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Deciphering the complexity of sainfoin (Onobrychis viciifolia) proanthocyanidins by MALDI-TOF mass spectrometry with a judicious choice of isotope patterns and matrixes.

Deciphering the complexity of sainfoin (Onobrychis viciifolia) proanthocyanidins by MALDI-TOF mass spectrometry with a judicious choice of isotope patterns and matrixes.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

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