The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1987
Filed:
Feb. 06, 1984
Agnes Kelemen, Budapest, HU;
Istvan Jaksa, Budapest, HU;
Bela Stefko, Budapest, HU;
Eva Udvardy Nagy nee Cserey Pechany, Budapest, HU;
Other;
Abstract
A process is disclosed for the treatment of fermentation broths containing vitamin B.sub.12 and other corrinoids, and for the preparation of vitamin B.sub.12 concentrates or crystalline vitamin B.sub.12 wherein the fermentation broth is contacted with a nonionic, macroreticular, adsorption resin having a pore size of 10.sup.-8 to 10.sup.-7 meters, a grain diameter of at least 10.sup.-4 m, and a specific surface area of at least 200 m.sup.2 /g so that the macromolecular adsorption resin adsorbs fermentation broth additives and metabolites of fermentation, whereas the intact microorganism cells containing the vitamin B.sub.12 remain in solution. The solution of intact vitamin B.sub.12 -containing cells is then treated further to obtain vitamin B.sub.12 in still purer form.