| abstract |
A process for making MAA from a clarified DAA-containmg fefme.ntation broth includes (a) distilling: the broth to form an overhead thai includes water and ammonia, and a liquid bottoms, that includes MAA, at least some DAA, and at least about 20 wt% water; (fa) cooling "the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-contaraing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion: and (d) recovering the solid portion. |