Optimization of Ultrasound-Assisted Extraction Followed by Macroporous Resin Purification for Maximal Recovery of Functional Components and Removal of Toxic Components from Ginkgo biloba Leaves

Figure 2

Representative chromatograms for the extract of G. biloba leaves monitored in negative mode with ESI-Q/TOF-MS. The peak numbers represent the same meanings as described the sequence of standards in Section 2.1.