Skip to main content
. 2015 Apr 28;6:276. doi: 10.3389/fpls.2015.00276

Table 2.

Central composite design matrix of independent variables and their corresponding experimental and predicted values of the amygdalin content in the extracts.

Exp. No. ANN Std CCD τ (min) Ce(%) ω (m/v) t (°C) Yobs(g/100 g d.e.) CCD MLP
Ypred Ypred
(g/100 g d.e.)
1train 24 65.0 60 1:15 78 6.51 6.45 6.26
2train 7 37.5 80 1:20 36 10.38 10.50 10.58
3train 16 92.5 80 1:20 64 12.29 12.26 12.33
4train 17 10.0 60 1:15 50 6.85 6.47 6.54
5train 19 65.0 20 1:15 50 7.83 7.55 7.64
6train 6 92.5 40 1:20 36 11.57 11.22 11.20
7train 22 65.0 60 1:25 50 11.09 10.64 10.67
8train 11 37.5 80 1:10 64 4.15 4.80 4.84
9train 8 92.5 80 1:20 36 14.83 14.93 14.77
10train 30 (C) 65.0 60 1:15 50 8.35 8.50 8.15
10train 27 (C) 65 60 1:15 50 8.10 8.50 8.15
11train 1 37.5 40 1:10 36 9.35 9.27 9.43
12train 2 92.5 40 1:10 36 9.65 9.97 10.0
13train 3 37.5 80 1:10 36 9.30 8.92 9.30
10train 29 (C) 65.0 60 1:15 50 8.42 8.50 8.15
14train 13 37.5 40 1:20 64 6.82 6.91 6.77
10train 28 (C) 65.0 60 1:15 50 8.26 8.50 8.15
15train 5 37.5 40 1:20 36 9.15 9.58 9.48
16train 23 65.0 60 1:15 22 13.37 13.24 13.23
17train 14 92.5 40 1:20 64 8.27 8.55 8.91
10train 26 (C) 65.0 60 1:15 50 8.88 8.50 8.15
18train 9 37.5 40 1:10 64 4.94 5.15 4.89
19train 10 92.5 40 1:10 64 5.99 5.85 6.23
20train 18 120.0 60 1:15 50 11.41 11.59 11.73
21train 21 65.0 60 1:5 50 6.66 6.36 6.34
22train 12 92.5 80 1:10 64 8.92 8.29 8.26
23train 15 37.5 80 1:20 64 7.93 7.83 7.87
24train 20 65.0 100 1:15 50 10.82 10.91 11.09
10train 25 (C) 65.0 60 1:15 50 8.45 8.50 8.15
25train 4 92.5 80 1:10 36 12.10 12.40 12.08

τ, extraction time; Ce, ethanol concentration; ω, solid-to-liquid ratio; t, extraction temperature; Yobs, observed value, Ypred, predicted value, d.e., dried extract; Std, standard order.