Fig. 4 | Scientific Reports

Fig. 4

From: Development of a leaf metabolite-based intact sample distinguishing algorithm for the three varieties of Panax Vietnamensis

Fig. 4

Discovery of PVF-specific phytometabolite marker. (a) Partial least squares-discriminant analysis (PLS-DA) between PVV, PVF, and PVL; and (b) the VIP scores of the first component of the optimal PLS-DA model. The integer numbers in the row indicate the mass-to-charge ratio (m/z) of the features. (c) Relative intensity of m/z 426 between PVV, PVF, and PVL. The data are expressed as the mean ± standard deviation. **** indicates that the adjusted P-value is < 0.0001. (d) TLC image of ginseng leaves methanol extract under a UV 254 nm wavelength. Three random samples from three groups of Panax vietnamensis are developed. STD denotes the later isolated indole alkaloid glycoside. (e) Molecular structure of isolated indole alkaloid glycoside, panaxindole.

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