Table 3.

Comparison of rare ginsenosides contents in samples obtained from Panax quinquefolius L. root by different extraction methods

Method	Extraction yield (total)	Contents of rare ginsenosides [mg/g, mean ± standard deviation (n = 3)]
		20(S)-Rh1	20(R)-Rh1	Rg6	F4	Rk3	20(S)-Rg3	20(R)-Rg3	Rk1	Rg5
MAE	309.78±7.23	0.54±0.013	0.81±0.0063	2.99±0.017	5.88±0.0027	1.18±0.020	8.05±0.18	12.12±0.15	15.87±0.34	84.95±1.22
HR	185.16±5.18	0.041±0.00072	0.035±0.0011	0.017±0.00078	0.098±0.0027	0.025±0.0012	0.15±0.0015	0.098±0.0033	0.065±0.0028	0.32±0.014
HTP	120.36±4.45	0.0091±0.00035	0.0032±0.000090	0.00084±0.000043	–	0.0017±0.000051	0.0037±0.00017	0.0017±0.000033	–	–

HR, heating reflux; HTP, high temperature and pressure; MAE, microwave-assisted extraction