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Table 1 Central composite design: coded variables, real variables, and responses

From: Optimization of drying parameters for mango seed kernels using central composite design

Number Coded variables Real variables Responses
Moisture (%) Oil content (%) Total polyphenols (% DM) Antioxidant activity (eq g of VitC/100 g DM)
x 1 x 2 X 1 X 2 Exp Cal Res Exp Cal Res Exp Cal Res Exp Cal Res
1 −1.00 −1.00 44.85 13.64 16.59 17.86 −1.27 9.14 9.05 0.09 0.99 1.11 −0.12 477.12 581.02 −103.90
2 1.00 −1.00 75.15 13.64 10.36 10.30 0.05 8.78 8.68 0.11 0.37 0.41 −0.04 781.64 924.62 −142.98
3 −1.00 1.00 44.85 61.36 7.72 8.11 −0.39 9.16 9.32 −0.16 1.30 1.30 0.00 892.26 723.22 169.04
4 1.00 1.00 75.15 61.36 1.72 0.79 0.93 8.79 8.94 −0.15 1.05 0.97 0.08 2,326.22 2,196.42 129.80
5 0.00 0.00 60.00 37.50 4.80 5.79 −0.99 9.45 9.56 −0.11 0.86 0.94 −0.08 1,144.65 1,148.92 −4.27
6 0.00 0.00 60.00 37.50 6.31 5.79 0.52 9.42 9.56 −0.14 0.91 0.94 −0.03 1,164.00 1,148.92 15.08
7 0.00 0.00 60.00 37.50 4.91 5.79 −0.88 9.49 9.56 −0.07 0.81 0.94 −0.13 1,150.18 1,148.92 1.26
8 −1.32 0.00 40.00 37.50 12.35 11.16 1.20 9.16 9.12 0.04 1.29 1.21 0.08 708.29 753.06256 −44.78
9 1.32 0.00 80.00 37.50 0.53 1.34 −0.81 8.65 8.63 0.02 0.49 0.53 −0.04 1,966.91 1,952.15056 14.76
10 0.00 −1.32 60.00 6.00 18.61 17.75 0.86 8.92 9.08 −0.16 0.89 0.78 0.11 596.20 404.3872 191.81
11 0.00 1.32 60.00 69.00 4.56 5.03 −0.47 9.66 9.44 0.22 1.20 1.27 −0.07 1,116.10 1,337.6272 −221.53
12 0.00 0.00 60.00 37.50 4.77 5.79 −1.02 9.39 9.56 −0.16 1.07 0.94 0.13 1,145.52 1,148.92 −3.40
13 0.00 0.00 60.00 37.50 6.41 5.79 0.62 9.83 9.56 0.27 0.92 0.94 −0.02 1,149.64 1,148.92 0.72
14 0.00 0.00 60.00 37.50 7.45 5.79 1.66 9.75 9.56 0.19 1.05 0.94 0.11 1,147.22 1,148.92 −1.70