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Table 2 Predicted responses to central composite design with three independent variables

From: Optimization of an efficient solid-phase enrichment medium for Salmonella detection using response surface methodology

Run 10% ferric citrate amine (μL) 20% sodium hyposulfite (μL) 5% cystine (μL) Response 1 (%) Response 2 (%)
1 9.00 12.00 7.00 96.30 97.50
2 6.00 16.00 10.00 74.07 75.00
3 14.05 12.00 7.00 85.19 85.00
4 9.00 12.00 7.00 100.00 97.50
5 6.00 8.00 4.00 52.50 47.50
6 9.00 12.00 7.00 92.59 97.50
7 6.00 8.00 10.00 66.67 65.00
8 12.00 8.00 4.00 70.37 70.00
9 3.95 12.00 7.00 37.04 40.00
10 9.00 12.00 12.05 92.59 92.50
11 12.00 16.00 4.00 85.19 85.00
12 12.00 16.00 10.00 92.60 90.00
13 6.00 16.00 4.00 74.07 72.50
14 9.00 18.73 7.00 96.29 92.50
15 12.00 8.00 8.00 85.19 90.00
16 9.00 12.00 1.95 62.96 67.50
17 9.00 12.00 7.00 96.30 100.00
18 9.00 12.00 7.00 100.00 100.00
19 9.00 12.00 7.00 100.00 97.50
20 9.00 5.27 7.00 51.85 50.00
  1. Response 1 means the isolation rate of the 9 standard Salmonella; Response 2 means the isolation rate of 40 local Salmonella strains