Chemical Differentiation and Quantitative Analysis of Different Types of Panax Genus Stem-Leaf Based on a UPLC-Q-Exactive Orbitrap/MS Combined with Multivariate Statistical Analysis Approach

Figure 3

MS² spectra of [M + HCOO]⁻ for (a) Rf and (b) F11 in the negative mode; MS² spectra of [M + Na]⁺ for (d) Rf and (e) F11 in the positive mode. The signal intensity of product ions for Rf and F11 with respect to the NCE in the negative (c) and positive (f) modes (glc represents glucose and ara represents arabinose).

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(b)

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(f)