Methionin als Methylgruppendonator für Zimtsäuren und Anthocyane

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Abstract
Seedlings of wheat, oat, and red cabbage and flower buds of petunia were supplied with L-methionine (methyl-C14). Cinnamic acids and anthocyanins were purified by thin layer chromatography to constant specific activity. The methylated compounds had a 16-30-fold higher activity than the nonmethylated ones. By splitting with hydriodic acid it was shown that the methyl groups of cinnamic acids and anthocyanins contained radioactivity. Therefore, the o-methyl groups of both cinnamic acids and anthocyanins were derived from the methyl groups for methionine.