Flavanones, Catabolites, Peroxidases, Degradation, Substitution Pattern Peroxidases were shown to be responsible for the degradation of flavanones as occuring after application of these substrates to plant cell suspension cultures. — Comparative studies with various flavanones and horseradish peroxidase showed that only 4'-hydroxyflavanones will be catabolized peroxidatically. — Intensive analy...