ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Vitamin K₁ Purification Process in a Molecular Evaporator

J. Cvengroš, M. Mrázek, and G. Kmetty

Department of Physical Chemistry, Faculty of Chemical Technology, Slovak University of Technology, SK-812 37 Bratislava

E-mail: cvengros@chtf.stuba.sk

Abstract: A purification process of crude phytomenadione (vitamin K₁) by molecular distillation using a short-path wiped-film evaporator and by adsorption is studied. The purification procedure is documented by evaluation of samples from the individual stages of the process by means of UV and visible spectroscopies, TLC, refraction index measurements, and further methods. Satisfactory parameters were found in a material obtained as the distillate from the molecular evaporator, particularly after its adsorption on a phenolformaldehyde-resin-based ion exchanger.

Full paper in Portable Document Format: 532a102.pdf

Chemical Papers 53 (2) 102–106 (1999)