Fig. 6

Variation of the contents of several selected taxoids and flavonoids among three different Taxus species. The contents of paclitaxel (a) and three intermediates, including baccatin III (b), 10-DAP (c), and 10-DAB III (d), were quantified by HPLC-MS/MS method. The contents of amentoflavone (e), ginkgetin (f), quercetin (g), and luteolin (h), were quantified by HPLC-MS/MS method. A P value < 0.05 was considered to be statistically significant and indicated by “b” and P < 0.01 was indicated by “a”