FIG 10.

Schematic representation of hydroxycinnamic acid metabolism in L. plantarum WCFS1. For R₁ (OH) and R₂ (H), the represented compounds are p-coumaric acid (A), vinyl phenol (B), and phloretic acid (C). For R₁ (OH) and R₂ (OH), the compounds are caffeic acid (A), vinyl catechol (B), and hydrocaffeic acid (C). For R₁ (OH) and R₂ (OCH₃), the compounds are ferulic acid (A), vinylguaiacol (B), and hydroferulic acid (C). For R₁ (H) and R₂ (OH), only the reduction reaction is carried out and the represented compounds are m-coumaric acid (A) and 3-(3-hydroxyphenyl)propionic acid (C).