Table 2.

Phenolic acids contents of valerian extracts.

Extraction Method	Contents (mg/g Lyophilized Extract)
	Gallic Acid	Protocatechuic Acid	Chlorogenic Acid	Caffeic Acid	Rosmarinic Acid	Total
Roots
75C0E	0.31 ± 0.01D 1	0.57 ± 0.01D	0.21 ± 0.01E	0.57 ± 0.01E	nd 2	1.66 ± 0.01E
75C25E	0.33 ± 0.01CD	0.79 ± 0.02C	0.29 ± 0.01D	0.60 ± 0.02D	nd	2.01 ± 0.04D
75C50E	0.35 ± 0.01C	0.82 ± 0.03C	0.30 ± 0.01C	0.64 ± 0.03C	nd	2.11 ± 0.05C
75C75E	0.46 ± 0.01B	0.95 ± 0.03B	0.34 ± 0.01B	0.84 ± 0.04B	nd	2.59 ± 0.05B
75C95E	0.55 ± 0.02A	1.20 ± 0.04A	0.36 ± 0.01A	0.98 ± 0.03A	nd	3.09 ± 0.07A
Rhizomes
75C0E	0.30 ± 0.01D	0.46 ± 0.02E	0.09 ± <0.01E	0.23 ± <0.01D	nd	1.08 ± 0.03E
75C25E	0.33 ± 0.01C	0.54 ± 0.01D	0.12 ± <0.01D	0.25 ± 0.01D	nd	1.24 ± 0.03D
75C50E	0.39 ± 0.01B	0.61 ± 0.03C	0.13 ± 0.01C	0.28 ± 0.01C	nd	1.41 ± 0.06C
75C75E	0.41 ± 0.01B	0.66 ± 0.03B	0.14 ± <0.01B	0.37 ± 0.02B	nd	1.58 ± 0.06B
75C95E	0.59 ± 0.02A	0.91 ± 0.03A	0.15 ± 0.01A	0.49 ± 0.02A	nd	2.14 ± 0.07A

¹ Each value is expressed as mean ± standard deviation (n = 4). Means with different capital letters within a column differ significantly (p < 0.05). ² nd = not detected.