Table 2.

Main component contents of phenylethanol glycosides and cyclic ether terpenes in Cistanche slices under different drying conditions.

Drying Conditions	Phenylethanoid Glycoside (mg/mL)					Iridoids (mg/mL)
	Echinacoside	Salidroside	Jinshi Sericin	Verbascoside	Isoacteoside	Catalpol	Leonurus Japonicus Glycoside
45 °C 75 mm 0.030 MPa 5 mm	$0.93\pm {0.06}^{\mathrm{c}}$	$0.24\pm {0.05}^{\mathrm{e}}$	$0.69\pm {0.05}^{\mathrm{c}}$	$3.35\pm {0.04}^{\mathrm{b}}$	$1.25\pm {0.14}^{\mathrm{a}}$	$27.37\pm {2.63}^{\mathrm{a}}$	$14.38\pm {2.71}^{\mathrm{e}}$
55 °C 75 mm 0.030 MPa 5 mm	$0.47\pm {0.05}^{\mathrm{cd}}$	$0.31\pm {0.07}^{\mathrm{d}}$	$0.51\pm {0.11}^{\mathrm{e}}$	$7.44\pm {0.41}^{\mathrm{a}}$	$0.45\pm {0.07}^{\mathrm{b}}$	$19.85\pm {1.07}^{\mathrm{b}}$	$20.21\pm {2.03}^{\mathrm{b}}$
65 °C 75 mm 0.030 MPa 5 mm	$0.27\pm {0.04}^{\mathrm{d}}$	$0.43\pm {0.12}^{\mathrm{b}}$	$0.69\pm {0.16}^{\mathrm{c}}$	$0.19\pm {0.04}^{\mathrm{g}}$	$0.36\pm {0.03}^{\mathrm{de}}$	$10.93\pm {1.09}^{\mathrm{de}}$	$18.31\pm {1.47}^{\mathrm{c}}$
55 °C 65 mm 0.030 MPa 5 mm	$2.97\pm {0.01}^{\mathrm{a}}$	$0.21\pm {0.01}^{\mathrm{ef}}$	$1.03\pm {0.09}^{\mathrm{b}}$	$3.08\pm {0.17}^{\mathrm{bc}}$	$0.39\pm {0.08}^{\mathrm{cd}}$	$9.06\pm {0.54}^{\mathrm{ef}}$	$7.85\pm {0.65}^{\mathrm{fg}}$
55 °C 85 mm 0.030 MPa 5 mm	$0.28\pm {0.06}^{\mathrm{d}}$	$0.18\pm {0.01}^{\mathrm{fg}}$	$0.36\pm {0.01}^{\mathrm{g}}$	$1.32\pm {0.04}^{\mathrm{d}}$	$0.18\pm {0.02}^{\mathrm{fg}}$	$8.26\pm {0.03}^{\mathrm{f}}$	$11.23\pm {1.23}^{\mathrm{ef}}$
55 °C 75 mm 0.020 MPa 5 mm	$1.63\pm {0.15}^{\mathrm{b}}$	$0.14\pm {0.07}^{\mathrm{g}}$	$0.56\pm {0.05}^{\mathrm{de}}$	$0.92\pm {0.08}^{\mathrm{de}}$	$0.27\pm {0.03}^{\mathrm{e}}$	$10.25\pm {0.31}^{\mathrm{e}}$	$5.45\pm {0.01}^{\mathrm{g}}$
55 °C 75 mm 0.040 MPa 5 mm	$0.37\pm {0.08}^{\mathrm{d}}$	$0.39\pm {0.02}^{\mathrm{bc}}$	$0.59\pm {0.04}^{\mathrm{d}}$	$7.77\pm {0.21}^{\mathrm{a}}$	$0.13\pm {0.04}^{\mathrm{fg}}$	$15.81\pm {0.03}^{\mathrm{cd}}$	$9.67\pm {0.62}^{\mathrm{f}}$
55 °C 75 mm 0.030 MPa 4 mm	$0.23\pm {0.05}^{\mathrm{d}}$	$1.16\pm {0.09}^{\mathrm{a}}$	$1.88\pm {0.03}^{\mathrm{a}}$	$0.14\pm {0.04}^{\mathrm{g}}$	$0.07\pm {0.01}^{\mathrm{g}}$	$7.75\pm {0.43}^{\mathrm{fg}}$	$14.34\pm {0.21}^{\mathrm{e}}$
55 °C 75 mm 0.030 MPa 6 mm	$0.33\pm {0.12}^{\mathrm{d}}$	$0.95\pm {0.02}^{\mathrm{ab}}$	$2.15\pm {0.06}^{\mathrm{a}}$	$0.23\pm {0.01}^{\mathrm{f}}$	$0.08\pm {0.02}^{\mathrm{g}}$	$9.33\pm {0.07}^{\mathrm{ef}}$	$14.87\pm {1.74}^{\mathrm{e}}$
Natural drying	$2.67\pm {0.51}^{\mathrm{b}}$	$0.21\pm {0.03}^{\mathrm{ef}}$	$1.71\pm {0.05}^{\mathrm{b}}$	$5.53\pm {0.02}^{\mathrm{b}}$	$0.41\pm {0.07}^{\mathrm{bc}}$	$14.71\pm {0.13}^{\mathrm{d}}$	$24.55\pm {1.45}^{\mathrm{a}}$
HA drying	$0.49\pm {0.05}^{\mathrm{cd}}$	$0.24\pm {0.01}^{\mathrm{e}}$	$0.38\pm {0.02}^{\mathrm{g}}$	$0.56\pm {0.06}^{\mathrm{f}}$	$0.18\pm {0.02}^{\mathrm{f}}$	$6.45\pm {0.06}^{\mathrm{g}}$	$14.06\pm {0.32}^{\mathrm{e}}$
RFV drying	$0.23\pm {0.04}^{\mathrm{d}}$	$0.36\pm {0.06}^{\mathrm{c}}$	$0.43\pm {0.06}^{\mathrm{f}}$	$3.24\pm {0.04}^{\mathrm{c}}$	$0.23\pm {0.05}^{\mathrm{ef}}$	$16.24\pm {0.41}^{\mathrm{c}}$	$16.63\pm {1.03}^{\mathrm{d}}$

Note: A different lowercase letter after each column indicates a significant difference (p < 0.05).