Potential Antioxidant Activity of Novel Antioxidant Peptides from Protein Hydrolysate of Peony Seed Dreg in Chemical and H₂O₂-Induced RAW264.7 Cells

Table 1

Protease activity in the purification process of E423.

Purification stage	Total protein	Total enzyme activity	Specific activity
	(mg)	(U)	(U/mg)
Crude enzyme	367	3844	10.5
Ammonium sulfate precipitation	60.8	2492	41
Anion exchange	4.9	1641	334.9
Size exclusion	2.0	1190.4	595.2