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Table 2 Experimental data and predicted content obtained for the dependent variables

From: Optimization protocol for the extraction of 6-gingerol and 6-shogaol from Zingiber officinale var. rubrum Theilade and improving antioxidant and anticancer activity using response surface methodology

Treatment X 1 X 2 6-gingerol content (mg/g DW) Predicted content of 6-gingerol 6-shogaol content (mg/g DW) Predicted content of 6-shogaol Antioxidant activity % Predicted content of antioxidant activity %
1 (c) 65 3 1.49 1.52 1.25 1.20 68.0 71.0
2 50 4 1.08 1.21 0.90 1.02 62.5 65.0
3 80 4 2.74 2.80 1.59 1.63 89.0 83.8
4 80 2 1.79 1.73 1.20 1.12 78.0 78.3
5(c) 65 3 1.56 1.52 1.33 1.24 69.0 71.0
6(c) 65 3 1.42 1.52 1.21 1.20 68.0 71.0
7 50 2 1.38 1.33 1.04 1.08 66.0 60.8
8(c) 65 3 1.62 1.52 1.31 1.20 70.0 71.0
9 82.8 3 2.55 2.53 1.32 1.35 84.0 85.6
10 65 4.1 2.00 1.92 1.55 1.48 79.0 75.8
11 47.1 3 1.35 1.28 1.10 1.05 66.8 62.6
12(c) 65 3 1.52 1.52 1.28 1.20 73.0 71.0
13 65 1.8 1.11 1.19 0.82 0.97 66.0 68.0
14(c) 65 3 1.55 1.52 1.24 1.20 71.0 71.0
  1. c central point