申请人:NIPPON SODA CO., LTD.
公开号:EP1352964A1
公开(公告)日:2003-10-15
An industrially advantageous process for producing a substance wherein the production speed of a reaction product in a reaction with the use of a microbial catalyst can be maintained at a constant level over a long period of time. In a reaction with the use of a microbial catalyst (for example, resting cells of an arthrobacter capable of converting a-hydroxynitriles into the corresponding a-hydroxy acid amides or a-hydroxy acid ammonium salts), the substance is produced at a constant speed by adding the substrate at a constant speed, regulating the concentration of the microbial catalyst in the liquid reaction mixture at a constant level and controlling the temperature so as to rise the reaction temperature at the point that the enzymatic activity of the microbial catalyst is lowered in the course of the reaction so as to maintain the reaction speed at a constant level.
一种具有工业优势的物质生产工艺,在使用微生物催化剂的反应中,反应产物的生产速度可长期保持在恒定水平。在使用微生物催化剂(例如,能够将 a-羟基硝酰胺转化为相应的 a-羟基酸酰胺或 a-羟基酸铵盐的节杆菌的静止细胞)的反应中,通过以恒定的速度加入底物,以恒定的速度生产物质、将液体反应混合物中微生物催化剂的浓度调节在恒定水平,并控制温度,以便在反应过程中微生物催化剂的酶活性降低时提高反应温度,从而将反应速度保持在恒定水平。