Quantitative and Molecular Similarity Analyses of the Metabolites of Cold- and Hot-Natured Chinese Herbs

Figure 2

Heatmap cluster analysis of the metabolites with significant differences () between the varied groups of hot- and cold-natured herbs. Rows represent metabolites and columns represent herbs. The orange box groups the 15 hot/warm-natured herbs and the blue box groups the 15 cold/cool-natured herbs. Color key indicates the relative concentrations of the identified compounds: yellow indicates higher concentrations, black indicates medium concentrations, and blue indicates lower concentrations. In addition, the values highlighted with two stars are less than 0.01. PCA of the charged metabolites in TCMs.