. Author manuscript; available in PMC: 2014 Aug 25.

Published in final edited form as: J Chromatogr A. 2006 Sep 27;1135(1):27–35. doi: 10.1016/j.chroma.2006.09.015

Table 3.

Intra- and Inter-day variations of the HPLC method for determination of ten saponins

Compound^a	Intra-day precision		Inter-day precision
Compound^a	Content (μg/g)	RSD (%)	Content (μg/g)	RSD (%)
1	744 ± 13	1.76	741 ± 21	2.84
2	1088 ± 20	1.86	1090 ± 24	2.22
3	138 ± 5	3.41	139 ± 3	2.44
4	427 ± 8	1.94	422 ± 11	2.70
5	738 ± 12	1.61	734 ± 13	1.78
6	2431 ± 20	0.80	2419 ± 19	0.79
7	2116 ± 41	1.94	2111 ± 32	1.52
8	282 ± 7	2.51	283 ± 9	3.14
9	590 ± 13	2.18	593 ± 20	3.38
10	294 ± 6	2.14	293 ± 12	4.20

RSD (%) = (SD/mean) ×100%.

(1) deapi-platycoside E; (2) platycoside E; (3) deapi-platycodin D₃; (4) platycodin D₃; (5) deapi-platycodin D; (6) platycodin D; (7) polygalacin D; (8) 3″-O-acetyl polygalacin D; (9) platycodin A; and (10) 2″-O-acetyl polygalacin D.