| abstract |
From a mixture of isoleucine and leucine in a weight ratio of at least 3: 7, the isoleucine is precipitated in an anhydrous solvent, in particular methyl ethyl ketone, using concentrated sulfuric acid. The precipitate is separated and freed from sulfuric acid, for example by neutralization with barium hydroxide after removal of the solvent.n n n Industrial production of marketable isoleucine from a mixture still loaded with leucine. |