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1. 发明授权

US6087139A Process for producing citric acid and/or citrates 失效
标题翻译：用于生产柠檬酸和/或柠檬酸盐的方法
公开(公告)号：US6087139A
公开(公告)日：2000-07-11
申请号：US176647
申请日：1998-10-22
申请人： Rudolf Boensch , Klaus Hohmann , Juergen Kuhn , Vaclav Cerny , Frantisek Hotek , Jiri Pendl
发明人： Rudolf Boensch , Klaus Hohmann , Juergen Kuhn , Vaclav Cerny , Frantisek Hotek , Jiri Pendl
IPC分类号： C07C51/42 , C07C51/47 , C12P7/48
CPC分类号： C07C51/42 , C07C51/47 , Y10S435/803 , Y10S435/917
摘要： Citric acid and/or the salts thereof are produced from a raw material containing carbohydrates. An aqueous solution of the raw material is converted into a first solution containing citric acid by means of fermentation, and from the first solution a second solution containing citric acid is obtained by means of a cell separation. The second solution is subjected to a protein precipitation at temperatures of 2 to 70.degree. C., and protein is separated by filtration. From the filtration, a third solution containing citric acid is obtained, and the same is passed through a first anion exchanger. The solution containing citric acid, which is discharged from the first anion exchanger, is passed through a second anion exchanger, which is selectively charged with citric acid. The second anion exchanger charged with citric acid is eluted with hydroxide solution or water, and there is thus obtained a fourth solution, in which citrate or citric acid is dissolved. Water is at least partly removed from the fourth solution.
摘要翻译：柠檬酸和/或其盐由含碳水化合物的原料生产。通过发酵将原料水溶液转化成含有柠檬酸的第一溶液，从第一溶液中通过细胞分离获得含有柠檬酸的第二溶液。第二溶液在2-70℃的温度下进行蛋白质沉淀，通过过滤分离蛋白质。从过滤得到含有柠檬酸的第三溶液，并且通过第一阴离子交换剂。从第一阴离子交换剂排出的含有柠檬酸的溶液通过第二阴离子交换剂，其选择性地加入柠檬酸。装有柠檬酸的第二阴离子交换剂用氢氧化物溶液或水洗脱，因此得到溶解有柠檬酸盐或柠檬酸的第四溶液。水至少部分地从第四溶液中除去。

2. 发明授权

US5759826A Process of preparing an organic acid 失效
标题翻译：制备有机酸的方法
公开(公告)号：US5759826A
公开(公告)日：1998-06-02
申请号：US760241
申请日：1996-12-04
申请人： Bernd Ahlers , Rudolf Bonsch , Michael Eichelsbacher , Jurgen Kuhn , Ulrich Sander , Jiri Pendl , Frantisek Hotek , Vaclav Cerny
发明人： Bernd Ahlers , Rudolf Bonsch , Michael Eichelsbacher , Jurgen Kuhn , Ulrich Sander , Jiri Pendl , Frantisek Hotek , Vaclav Cerny
IPC分类号： C07C51/42 , C07C51/43 , C07C51/47 , C12P7/40 , C12P7/42
CPC分类号： C07C51/43 , C07C51/42 , C07C51/47
摘要： A process is disclosed for preparing an organic acid and/or its salts from a solution obtained through fermentation. In this process, a pure carbohydrate-containing raw material is used. The acid-containing solution prepared by means of fermentation is supplied to a cell separation, and the acid-containing permeate is supplied to a protein precipitation, where it is mixed with a silicon-containing precipitant at temperatures between 2.degree. and 70.degree. C. The solution thus obtained is supplied to a protein separation, and the acid-containing permeate is concentrated and then supplied to a single- or multi-stage crystallization or a granulation.
摘要翻译：公开了从通过发酵获得的溶液制备有机酸和/或其盐的方法。在此过程中，使用纯碳水化合物原料。将通过发酵制备的含酸溶液供给到细胞分离中，并将含酸的渗透物供应至蛋白质沉淀，在2℃至70℃的温度下与含硅沉淀剂混合。将由此获得的溶液供给到蛋白质分离中，并将含酸的渗透物浓缩，然后供给至单级或多级结晶或造粒。

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