ArticleJournal of the American Society for Mass Spectrometry2007
Isomeric differentiation of green tea catechins using gas-phase hydrogen/deuterium exchange reactions.
Article in Journal of the American Society for Mass Spectrometry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
7 citing papers in PubMed.
- Screening and mechanistic evaluation of antioxidants for mitigating beany flavor formation during pea protein isolation.Current research in food science · 2026Article
- The Role of Polyphenolic Antioxidants from Tea and Rosemary in the Hydroxyl Radical Oxidation ofMolecules (Basel, Switzerland) · 2023Article
- Quality Assessment of Burdekin Plum (Molecules (Basel, Switzerland) · 2023Article
- Disambiguation of Isomeric Procyanidins with Cyclic B-Type and Non-cyclic A-Type Structures from Wine and Peanut Skin with HPLC-HDX-HRMS/MS.Journal of the American Society for Mass Spectrometry · 2018Article
- Application of Atmospheric Pressure Photoionization H/D-exchange Mass Spectrometry for Speciation of Sulfur-containing Compounds.Journal of the American Society for Mass Spectrometry · 2017Article
- Optimization and Application of APCI Hydrogen-Deuterium Exchange Mass Spectrometry (HDX MS) for the Speciation of Nitrogen Compounds.Journal of the American Society for Mass Spectrometry · 2015Article
- Comparison of functional group selective ion-molecule reactions of trimethyl borate in different ion trap mass spectrometers.Journal of the American Society for Mass Spectrometry · 2011Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
Hydrogen/deuterium exchange reactions in a quadrupole ion trap mass spectrometer are used to differentiate galloylated catechin stereoisomers (catechin gallate and epicatechin gallate; gallocatechin gallate and epigallocatechin gallate) and the nongalloylated analogs (catechin and epicatechin, gallocatechin and epigallocatechin). Significant differences in the hydrogen/deuterium exchange behavior of the four pairs of deprotonated catechin stereoisomers are observed upon reaction with D(2)O. Interestingly, the nongalloylated catechins undergo H/D exchange to a much greater extent than the galloylated species, incorporating deuterium at both aromatic/allylic and active phenolic sites. Nongalloylated catechin isomers are virtually indistinguishable by their H/D exchange kinetics over a wide range of reaction times (0.05 to 10 s). Our experimental results are explained using high-level ab initio calculations to elucidate the subtle structural variations in the catechin stereoisomers that lead to their differing H/D exchange kinetics.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.