method for producing hydroxy l proline or n - acetyl - hydroxy l proline from hydroxylated gelatin

摘要

A process of preparing hydroxy-L-proline starting from hydrolyzed animal gelatin, the improvement which comprises acetylating the hydrolyzed gelatin compounds, benzoylating the acetylated solution, separating N-acetyl-O-benzoyl-hydroxy-L-proline from this solution and then hydrolyzing in alkaline or acidic medium.