Figure 2.
Untargeted metabolomic analysis of FCB. (A) Comparative metabolite profiles of FCB from different sources; (B) Metabolite category distribution; (C) PLS-DA score plot in positive ion mode; (D) PLS-DA score plot in negative ion mode; (E) KEGG pathway enrichment analysis; (F) Content of five key metabolites in FCB from different sources. Asterisks are used to denote statistically significant differences: The significance of the results is indicated by the following p-values: p<0.05, ** p<0.01, p<0.001, and **** p<0.0001, among others.
