Indole-3-acetic Acid oxidation and crocin bleaching by horseradish peroxidase.
During indoleacetic acid (IAA) oxidation by horseradish peroxidase the water soluble model polyene, crocin, is bleached. IAA-oxidation and crocin bleaching are stimulated at acidic pH as well as by the monophenol p-hydroxyacetophenone. IAA oxidation and crocin bleaching are neither influenced by catalase or superoxide dismutase nor by different OH-radical scavengers, whereas both ascorbate and propylgallate are inhibitory.
Osswald
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WF
Institut für Botanik und Mikrobiologie, Biochemisches Labor, Technische Universität München, 8000 München 2, Arcisstrasse 16, Federal Republic of Germany.
Schütz
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W
Elstner
E F
EF