Improved method for crystallization of α-L-aspartyl-L-phenylalanine methyl ester (aspartame) from an aqueous solution by conductive cooling while avoiding turbulence in the crystallizing system wherein crystallization is carried out with cooling to a temperature level not lower than 10°C in the presence of at least 0.1% by weight of a C3-8 ketone, the amount of ketone and the temperature level being chosen for each individual ketone so that a homogeneous solvent system is present at the start of crystallization and an open drainable network of aspartame crystals is obtained.
通过传导冷却从
水溶液中结晶α-L-天冬
氨酰-
L-苯丙氨酸甲酯(
阿斯巴甜)的改进方法,同时避免结晶系统中的湍流 其中结晶是在至少 0.1%(按重量计)的 C3-8 酮,酮的量和温度
水平根据每种酮的情况来选择,以便在结晶开始时形成均匀的溶剂系统,并获得天冬酰胺晶体的开放式可排泄网络。