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The article discusses the results of a study showing the potential for the synthesis of various O-methylated polyphenols that may be applied to in vivo and in vitro studies and functional diets. Topics mentioned include the isolation of the enzyme gene and expression of the recombinant enzyme, the structure elucidation of O-methylated EGCGs (epigallocatechin gallates), and optimal pH and temperature of the enzyme. It also details the time-dependent changes in O-methylated EGCG production.

The article discusses a research paper in which several 0-methylated theaflavins (TFs) were synthesized by using O-methyltransferase from an edible mushroom and S9 fractions and inhibitory effect on H20 2-induced oxidative damage in human HepG2 cells were investigated. Topics discussed include the viability of H20 2-damaged HepG2 cells treated with TFs and 0-methylated TFs, polyphenol, and the inhibitory effect on oxidative damage.