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. 2022 Sep 29;13:1016692. doi: 10.3389/fpls.2022.1016692

Figure 2.

Figure 2

Metabolic analysis of tea flowers and leaves. (A) GC-MS total ion current of volatiles in tea flowers and leaves. (B) Venn diagram showing the variation of volatile compounds in tea flowers and leaves. (C, D) HPLC chromatographs of catechins and caffeine (C) and flavonols (D) in tea flowers and leaves. The compound names are listed on top of the peaks. EGCG, epigallocatechin gallate; ECG, epicatechin gallate; K-7-0-Glu, kaempferol-7-O-glucoside; K-3-0-Glu, kaempferol-3-O-glucoside; Q-3-0-Glu, quercetin-3-O-glucoside; M-3-0-Glu, myricetin 3-O-glucoside. (E) Phenotype of developing tea flowers. F1, flower stage 1; F2, flower stage 2; F3, flower stage 3; F4, flower stage 4; F5, flower stage 5; F6, flower stage 6. (F, G) Contents of caffeine and catechins in developing tea flowers (F) and different parts of tea flowers (G). (H, I) Contents of flavonols in developing tea flowers (H) and different parts of tea flowers (I). All data are from at least three biological replicates and are expressed as mean ± SD.