Table 1. Effect of drying conditions on the levels of chlorogenic acid, ferulic acid, and ligustilide in the rhizome of Cnidium officinale M (mg/g DW)

	30°C	40°C	50°C	60°C	70°C	Freeze-dried	RT-dried
Chlorogenic acid	4.20±2.881)ab	10.43±0.64a	8.32±1.76ab	3.30±2.46b	3.87±2.83ab	5.89±2.84ab	8.21±2.43ab
ferulic acid	0.32±0.28	0.99±0.15	0.70±0.16	0.27±0.30	0.41±0.36	0.45±0.23	0.83±0.29
Ligustilide	0.76±0.53c	3.36±0.08a	1.01±0.20bc	0.67±0.54c	1.27±0.84bc	0.58±0.25c	2.35±0.74ab

All values are mean±SD (n=3). Different superscript letters indicate significant differences among treatments according to a one-way ANOVA with Tukey’s honestly significant difference test (p<0.05).