Table 2. Central composite design, and contents of protopanaxatriol ginsenosides and total ginsenoside for response surface analysis of the acetic acid soaking conditions of taegeuk ginseng

Exp. No.1) Acetic acid soaking conditions Contents of protopanaxatriol ginsenosides (mg/g) Total ginsenoside
Acetic acid conc. (%) Soaking time (h) Re Rf Rg1 Rg2 Rh1
1 20 3.5 1.30±0.072) 0.57±0.01 1.48±0.08 0.21±0.00 0.21±0.01 7.06±0.27
2 20 1.5 2.69±0.13 0.93±0.03 2.14±0.13 0.38±0.01 0.21±0.01 11.85±0.51
3 10 3.5 1.87±0.11 0.57±0.01 1.32±0.07 0.29±0.01 0.09±0.00 7.69±0.18
4 10 1.5 2.07±0.09 0.89±0.01 2.27±0.16 0.19±0.00 0.18±0.00 12.04±0.61
5 15 2.5 1.50±0.05 0.52±0.00 1.51±0.07 0.12±0.00 0.08±0.00 8.54±0.10
6 15 2.5 1.36±0.06 0.41±0.00 1.41±0.06 0.10±0.00 0.02±0.00 7.70±0.09
7 25 2.5 1.99±0.12 0.90±0.02 2.28±0.12 0.23±0.00 0.19±0.01 13.62±0.71
8 5 2.5 2.57±0.13 0.77±0.01 1.63±0.08 0.33±0.01 0.04±0.00 11.10±0.48
9 15 4.5 2.34±0.15 0.57±0.00 1.62±0.09 0.25±0.01 0.09±0.00 9.66±0.37
10 15 0.5 3.04±0.13 1.09±0.08 2.56±0.14 0.35±0.02 0.08±0.00 15.51±0.63
The number of experimental conditions by central composite design.
Values represent the mean±SD (n=3).