Crystallization of .alpha.-l-aspartyl-l-phenylalanine methyl...

Details Crystallization of .alpha.-l-aspartyl-l-phenylalanine methyl... Crystallization of .alpha.-l-aspartyl-l-phenylalanine methyl...

C - Chemistry, Metallurgy

07

K

C07K 5/075 (2006.01) C07K 5/072 (2006.01)

Patent

CA 2180207

Improved method for crystallization of .alpha.-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.

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