Preparation and Identification of Hyaluronic Acid From Fresh Pigskin

Hyaluronic acid (HA) had been prepared from pigskin residues with neutral proteinase.The preparing results and conditions were studied.After extracting and purification,HA was detected through ultraviolet spectra and infraction spectrum,and its content and purity were tested by carbazole and Elason-Morgan,respectively.This results indicated that significant quantifies of HA could be prepared in fresh pigskin with biologic enzyme,and the pure HA was cosmetic grade and food grade.