FREMGANGSMAATE FOR FREMSTILLING AV HYALURONSYRE OG FRAKSJONERING AV REN HYALURONSYRE TIL OFTALMOLOGISK ANVENDELSE

摘要

A highly pure fraction of hyaluronic acid is disclosed which is non-inflammatory and avoids post-operative complications in ocular surgery. Also disclosed is a process for the preparation of hyaluronic acid characterized by converting hyaluronic acid into a corresponding quaternary ammonium salt and, following purification procedures, reconverting the quaternary ammonium salt into a sodium salt of hyaluronic acid.