Indoleacetic Acid Synthesis by Polyphenols in the Extraction of Pinus Phloem and Cambial Tissue

See allHide authors and affiliations

Science  10 Jul 1964:
Vol. 145, Issue 3628, pp. 166-167
DOI: 10.1126/science.145.3628.166


Indoleacetic acid may be formed by polyphenol oxidation of tryptophan during extraction of plant tissue with aqueous or organic solvents. Polyphenoloxidase promotes the conversion, but studies with heat-inactivated tissue indicate that the reaction can proceed without enzymes.