Establishment of HPLC Fingerprint of Different Drying Methods of Salvia miltiorrhiza and Study on Spectrum Effect Relationship

. Different drying methods affect the content of chemical components and antioxidant capacity of S. miltiorrhiza, among which the freeze-drying sample has strong antioxidant activity. Among them, freeze-drying exhibits strong antioxidant activity. This experiment successfully established the fingerprint spectrum of S. miltiorrhiza and its antioxidant activity-spectrum relationship. Phenolic acids may be the material basis for the antioxidant effects of different dried products of S. miltiorrhiza, which can provide a reference for the research on the pharmacological material basis and quality control of S. miltiorrhiza.