Preliminary Studies on Liquiritin, Deoxyschizandrin, and Tanshinone II A as Potential Anti-Neurodegenerative Disease Agent: Determination by Reverse-Phase Liquid Chromatography in Tianwang Buxin Pills

Table 6

Recovery results of the three biocomponents (n = 6).

Compound	Sample (mg)	Initial amount (μg)	Added amount (μg)	Found amount (μg)	Recovery (%)	Average recovery (%)	RSD (%)
Liquiritin	15.98	11.37	10.00	21.64	102.39	100.83	1.52
	15.95	11.35		21.47	100.93
	15.92	11.33		21.28	99.22
	15.71	11.18		21.36	99.93
	15.65	11.13		20.00	102.92
	15.42	11.37		21.32	99.58
Deoxyschizandrin	15.98	6.18	5.00	11.42	105.28	103.81	1.66
	15.95	6.17		11.36	104.08
	15.92	6.16		11.34	103.68
	15.71	6.07		11.40	104.88
	15.65	6.05		11.38	104.48
	15.42	5.96		11.18	100.48
Tanshinone II A	15.98	29.05	25.00	53.50	98.05	97.84	1.50
	15.95	28.99		53.08	96.35
	15.92	28.94		53.06	96.27
	15.71	28.56		53.36	97.47
	15.65	28.45		54.00	100.03
	15.42	28.03		53.71	98.87