Nontarget Metabolites of Rhizomes of Edible Sacred Lotus Provide New Insights into Rhizome Browning

Figure 2

Relationship between secondary metabolites (polyphenols, amino acids, and alkaloids) and their ecotype in 212 sacred lotus rhizome cultivars (significant compounds are shown in red). (a) PCA score plot of 212 sacred lotus rhizomes with different ecotypes. (b) OPLS-DA score plot of 212 sacred lotus rhizome with different ecotypes. (c) S-plot of 48 identified and quantified compounds. (d) VIP distribution of the 48 identified and quantified compounds.

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