The fragmentation pathways of EGCG3′′Me, EGCG4′′Me and EGCG3′Me were studied using LC-MS under positive ionization mode, and the EGCG methylated derivatives produced from EGCG catalyzed by EGCG-O-Methyltransferase were analyzed. Results showed that more than ten kinds of EGCG methylated derivatives were identified, including EGCG3′′Me, EGCG4′′Me, EGCG3′Me, EGCG5′Me, EGCG3′′,4′′-diMe, EGCG3′′,5′′-diMe, EGCG3′,5′-diMe, EGCG3′,5′′-diMe, EGCG3′,3′′,5′′-triMe, EGCG5′,3′′,5′′-triMe.
Lü Hai-peng
,
FEI Dong-mei
,
ZHANG Yue
,
LIN Zhi
,
TAN Jun-feng
,
GUO Li
. Analysis on the EGCG Methylated Derivatives Produced from EGCG Catalyzed by EGCG-O-Methyltransferase[J]. Journal of Tea Science, 2012
, 32(2)
: 100
-106
.
DOI: 10.13305/j.cnki.jts.2012.02.003
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