A tandem mass spectrometry method based on selected ions detects low-abundance phenolics in black tea - theatridimensins as products of the oxidative cascade.

CONCLUSIONS: When exploring black tea for the occurrence of two-step-oxidation products, the use of MS/MS on selected ions combined with extracted ion chromatography proved to be the most suitable. The occurrence of T3Ds and T3Dgs in various black teas was shown for the first time and the 'oxidative cascade hypothesis' was extended with novel oxidation products. Copyright © 2016 John Wiley & Sons, Ltd.
PMID: 27426456 [PubMed - in process]

Source: Rapid Communications in Mass Spectrometry : RCM - July 21, 2016 Category: Chemistry Authors: Verloop AJ, Vincken JP, Gruppen H Tags: Rapid Commun Mass Spectrom Source Type: research