Chemical Identification and Antioxidant Screening of Bufei Yishen Formula using an Offline DPPH Ultrahigh-Performance Liquid Chromatography Q-Extractive Orbitrap MS/MS

Figure 4

MS Intensity reduction for compounds in BYF after reaction with DPPH at different concentrations (500 μM, 1 mM, 2 mM, 5 mM, and 10 mM). The compound numbers marked on the X-axis refer to Table 1.