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

Figure 3

Relationship between targeted secondary metabolites (polyphenols, amino acids, and alkaloids) and their morphological variations (browning and size) in 212 sacred lotus rhizome cultivars (significant compounds are shown in red). (a) PCA of 212 sacred lotus rhizomes with different morphological variations. (b) OPLS-DA of 212 sacred lotus rhizomes with different morphological variations. (c) S-plots of secondary metabolites constructed using OPLS-DA analysis. (d) VIP distribution of the 48 identified and quantified compounds.

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