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:
Oct. 16, 2001
Filed:
Mar. 08, 1994
Savas Anastassiadis, 52428 Jllich, DE;
Alexander Aivasidis, Jllich, DE;
Christian Wandrey, Jllich, DE;
Other;
Abstract
A process for producing citric acid/citrate for use in producing citric acid, comprising the steps of continuously feeding to a fermenter containing a yeast capable of transforming glucose to citric acid by fermentation, in the presence of a nutrient medium and oxygen, sugar, especially glucose as a C source and at least one ammoniun compound as an N source fermenting the sugar to citric acid in said fermenter at a temperature, a pH and with a residence time sufficient to transform at least a major part of the sugar continuously fed to said fermenter to citric acid continuously withdrawing fermentation product from said fermenter recovering citric acid/citrate from said fermentation product controlling a C/N ratio fed to said fermenter to correspond to a molar ratio of glucose to ammonium compounds of 12 to 22 during fermentation of the glucose to citrate.