Identity of Auxin in Normal Urine

  title={Identity of Auxin in Normal Urine},
  author={O. P. Wieland and R. Ropp and J. Avener},
THE aim of this work was to obtain auxin a, first isolated by Kögl, Haagen-Smit and Erxleben1 from human urine in 1933. In their isolation procedure, these workers extracted a urine concentrate at an acid pH with ether. The ether extract in turn was partitioned into a neutral and an acid fraction with sodium bicarbonate. The auxin was present in the acid fraction and was subjected, in the final stages of the isolation procedure, to refluxing with methanol containing 1.5 per cent hydrochloric… Expand
7 Citations
The auxin-A, B enigma: scientific fraud or scientific ineptitude?
The research emanated from the Organic Chemistry Laboratory of the State University of Utrecht in The Netherlands under the direction of Dr. Fritz Kögl in collaboration with Dr. Hanni Erxleben, which provided the protocols required to repeat the isolation and crystallization of Auxin from human urine. Expand
Metabolism of the aromatic amino acids.
The chapter presents biosynthesis, which is confined to lower organisms (bacteria, fungi, plants, etc.). Expand
Chemie und Biochemie der Phytohormone
Die Bezeichnung Phytohormon wurde von Went u. Kogl 21 eingefuhrt. Kogl 4 verstand darunter oligodyname organische Stoffe, deren sich die Pflanze fur eine spezifische, physiologische Wirkung bedient.Expand
Ectohormones and phytohormones
Die chemische Regulierung des Wachstums
Observations on the fate of indolalkylamines in the organism
  • V. Erspamer
  • Chemistry, Medicine
  • The Journal of physiology
  • 1955