285740.fig.003a
(a)
285740.fig.003b
(b)
285740.fig.003c
(c)
285740.fig.003d
(d)
285740.fig.003e
(e)
285740.fig.003f
(f)
Figure 3: Extraction ion flow diagram of LC-MS mass spectrometer (indicates the peak). The horizontal coordinate and vertical coordinate indicates time of peak appearance and peak height. (a) the time of peak appearance of standard dammarendiol sample; (b)–(f) the time of peak appearance of dammarendiol in the reaction systems with different DS enzyme amounts (the DS enzyme amounts are 5, 10, 15, 20, and 25 μL, resp.).