Table 2.

Experimental data of three-factor, three-level Box-Behnken design for the Response Surface Methodology.

Treatment  combinationa	Response  TPC  (mg GAE/L of extract)b
1	25.60±1.40
2	55.67±4.59
3	42.56±2.66
4	76.26±5.47
5	25.03±3.15
6	38.25±4.49
7	38.96±3.31
8	23.84±4.05
9	77.42±3.28
10	81.16±4.65
11	55.22±2.35
12	55.68±5.84
13	24.33±2.36
14	55.87±2.85
15	43.86±5.84

^aRandomized, ^bMean± SD of triplicates.