Fig. 5. Determination of the volatile components obtained from different varieties of herbaceous tea using GC-QTOF. (A) Complexheatmap analysis; (B) principal component analysis; (C) key compound VIP analysis of HPT samples with different varieties; (D) Venn analysis. GC-QTOF, quadruple time of flight mass spectrometry; HPT, herbaceous peony tea; VIP, variable importance projection.