Uncover Epimers in Natural Extract Analysis

contributed by MOBILion Systems Inc | 12/06/2023

To demonstrate the utility of High-Resolution Ion Mobility (HRIM) to separate known epimers in green tea extracts.

Green tea is a beverage of broad interest due in large part to the presence of polyphenols in the leaves of Camellia sinensis.

The beneficial effects of green tea are attributed to the presence of number catechins, including non-esterified (+)-catechin (C), (-)-epicatechin (EC), (-)-gallocatechin (GC) and (-)-epigallocatechin (EGC) and the esterified (-)-catechin gallate (CG), (-)-gallocatechin gallate (GCG), (-)-epi- catechin gallate (ECG) and (-)-epigallocatechin gallate (EGCG).2 The four catechins that account for the majority of the components of green tea include EGCG, ECG, EGC, and EC with the potential of conversion to the non-epimeric forms during tea leave processing.3,4 As a result, it is necessary to evaluate epimerization during various physical processing to improve the nutritional value of green tea products. Although the catechin profile in green tea has been extensively studied, method agnostic characterization of the full catechin profile remains limited, representing a shortcoming in the study of health benefits of various epimers and processing impacts on epimerization.

Log in or register to read this article in full and gain access to The Analytical Scientist’s entire content archive. It’s FREE!

Email*

Choose a password

I have read and understand the Privacy Notice *

Stay up to date with our other newsletters and sponsors information, tailored specifically to the fields you are interested in

Receive communication from The Cannabis Scientist I want to stay up to date with the Mass Spectrometry field I want to stay up to date with the Spectroscopy field

When you click “Subscribe” we will email you a link, which you must click to verify the email address above and activate your subscription. If you do not receive this email, please contact us at [email protected].
If you wish to unsubscribe, you can update your preferences at any point.