Figure 3.

UHPLC–DAD–MS/MS fingerprints recorded by the Engström method for the PC extension units (red solid line), PC terminal units (red dashed line), PD extension units (blue solid line), and PD terminal units (blue dashed line) of the PA polymers detected in (A) O. viciifolia ‘WKT10’ leaves, (B) O. viciifolia ‘CPI63854’ leaves, (C) O. viciifolia ‘Perly’ leaves, (D) Rhododendron sp. leaves, (E) Larix sibirica needles, (F), Rhododendron canadense leaves, (G) T. plicata leaves, (H) V. riviniana leaves, (I) Primula veris flowers, (J) red Primula cultivar flowers, (K) Larix sp. needles, and (L) Nephelium connatum leaves. For the fingerprints, the raw data of each PA unit was combined from the data obtained by three cone voltages (excluding the monomer data because monomers are not PAs) and smoothed 30 times.