Research Article
Factorial Design to Optimize Biosurfactant Production by Yarrowia lipolytica
Table 6
Experimental design and results of the central composite design.
| Run | | | C/N | | |
| 1 | | | 5.9 | 51.4 | 11.8 | 2 | +1 | | 10.4 | 66.2 | 13.6 | 3 | 1 | +1 | 13.3 | 60.8 | 12.9 | 4 | +1 | +1 | 17.8 | 67.3 | 16.0 | 5 | | 0 | 8.7 | 54.1 | 12.1 | 6 | +1.41 | 0 | 15.1 | 57.8 | 15 | 7 | 0 | | 6.6 | 61.4 | 12.4 | 8 | 0 | +1.41 | 17.1 | 73.7 | 16.2 | 9 | 0 | 0 | 11.9 | 81.8 | 19.5 | 10 | 0 | 0 | 11.9 | 81.1 | 19.0 | 11 | 0 | 0 | 11.9 | 80.9 | 20.1 |
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The coded variables ( = 1, 4) are defined in Table 5. Emulsification index (%) Variation in surface tension (mN ).
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