Process for the recovery of zinc bacitracin free from zinc hydroxide
AssigneePhylaxia Oltoanyag- es Tapszertermelo Vallalat
InventorsJudit Bathory, Marta Ery nee Nagy, Lajos Gerei, Ferenc Lakatos, Magdolna Stiller nee Kisteleki, Tamas Vaghy
Life of this patent
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Abstract
A process for the recovery of bacitracin in the form of a zinc complex wherein the pH is raised to precipitate the zinc bacitracin complex. The zinc bacitracin complex is precipitated in the presence of ammonium ion which complexes the excess zinc and maintains it in solution, thereby preventing coprecipitation of zinc hydroxide.
Claims3
A process for the recovery of bacitracin from a solution containing same which comprises the step of raising the pH of said solution in the presence of zinc ion from a soluble zinc source added to the solution and in the presence of ammonium ion to precipitate the bacitracin in the form of a zinc bacitracin complex while maintaining zinc which does not form said zinc bacitracin complex in solution;
- removing the zinc bacitracin complex precipitated from said solution;
- and drying the zinc bacitracin complex precipitate.
Dependencies are inferred from the claim text.