CRYSTAL OF AMINO ACID SALT OF 3-HYDROXYISOVALERIC ACID AND PRODUCTION METHOD THEREOF

摘要

The purpose of the present invention is to provide: a crystal of HMB amino acid salt, which is easy to handle and is highly soluble; and a production method of said crystal. According to the present invention, a crystal of HMB amino acid salt can be precipitated by dissolving HMB amino acid salt in an amorphous state in a solvent containing an alcohol and by agitating said solvent or leaving said solvent still. In addition, a crystal of HMB amino acid salt can be precipitated by concentrating an HMB amino acid salt aqueous solution having a pH of 2.5-11.0.