...Santosh R. Kanade; Beena Paul; A. G. Appu Rao; Lalitha R. Gowda Field bean ( Dolichos lablab ) contains a single isoform of PPO (polyphenol oxidase) – a type III copper protein that catalyses the o -hydroxylation of monophenols and oxidation of o -diphenols using molecular oxygen...

... deuterium isotope effect diphenols monophenols mushroom polyphenol oxidase tyrosinase Abbreviations used: DHPAA, dihydroxyphenylacetic acid; DHPPA, dihydroxyphenylpropionic acid; 4EP, 4-ethoxyphenol; 3HA, 3-hydroxyanisole; 4HA, 4-hydroxyanisole; 3HBA, 3-hydroxybenzylalcohol; 4HBA, 4...

.... As they are produced, these polyphenols may be subjected to deleterious enzymic oxidation by the plant polyphenol oxidases. They are generally synthesized as glycosides like 5,4′-dihydroxystilbene-3- O -β- d -glucopyranoside, the 3-glucoside of resveratrol. The effects of the glycosylation and methylation...