Crystallization of .alpha.-L-aspartyl-L-phenylalanine methyl ester from aqueous solution
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United States of America Patent
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Jun 10, 1997
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N/A
app pub date -
Dec 20, 1995
filing date -
Dec 22, 1994
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Expired
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Abstract
A method for crystallizing aspartame comprising the combination of steps of: (A) providing (i) dispersed droplets of a fluid mixture comprising aspartame and water, and (ii) a water-immiscible fluid zone; (B) passing the dispersed droplets through the water-immiscible fluid zone under effective temperature and dispersive conditions to effect cooling of the dispersed droplets so that a state of initial relative supersaturation of aspartame between about 1 and 6 is formed within the dispersed droplets; (C) collecting the dispersed droplets in the supersaturated state in a substantially static collection zone so that a slurry comprising a crystalline form of aspartame is formed from the droplets. The method provides for rapid, efficient cooling of aspartame solutions and yields aspartame crystals with desirable qualities.
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