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    • 1. 发明申请
    • A PROCESS FOR PRODUCTION OF CITRIC ACID AND MONOVALENT CITRATE SALTS
    • 一种生产柠檬酸和单一柠檬酸盐的方法
    • WO1997008332A1
    • 1997-03-06
    • PCT/US1996011089
    • 1996-06-28
    • NTEC, INC.
    • NTEC, INC.DATTA, RathinBERGEMANN, Eugene, P.
    • C12P07/48
    • C12P7/48Y10S435/80Y10S435/917
    • A short process is disclosed for the production of citric acid in high yield and purtiy. Conidia of Aspergillus niger are cultured in an aqueous solution of decationized glucose syrup in a fermentation medium whose maganese (II) concentration is 2.5 to less than 20 parts per billion and whose pH value is about 1.5 to about 3.0. The fermentation medium is maintained for about 4-7 days to form citric acid and mycelia pellets in an aqueous product broth. That broth is filtered and then electrodialyzed to form a citric acid-containing aqueous broth. That broth is decolorized and ion-exchanged to remove color and inorganic ions and form an aqueous citric acid solution in which citric acid constitutes at least 98 percent of the organic acid present.
    • 公开了以高产率和纯度生产柠檬酸的简短方法。 将黑曲霉的分生孢子在发酵培养基中的糖化葡萄糖浆的水溶液中培养,其发酵培养基中的骨(II)浓度为2.5至小于20十亿,pH值为约1.5至约3.0。 将发酵培养基保持约4-7天,以在含水产品肉汤中形成柠檬酸和菌丝体颗粒。 将该肉汤过滤,然后电渗析以形成含柠檬酸的水性肉汤。 该肉汤被脱色并离子交换以除去颜色和无机离子并形成其中柠檬酸占存在的有机酸的至少98%的柠檬酸水溶液。