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Table 2 Full-factorial design for the biosurfactant production by Serratia marcescens UCP 1549 after 72 h

From: Sustainable biosurfactant produced by Serratia marcescens UCP 1549 and its suitability for agricultural and marine bioremediation applications

Assay Lactose (%) Cassava flour wastewater (%) Corn oil (%) Surface tension (mN/m)
Experimental Predicted
1 − 1 − 1 − 1 29.33 28.77
2 1 − 1 − 1 42.29 41.73
3 − 1 1 − 1 25.92 25.36
4 1 1 − 1 28.34 27.78
5 − 1 − 1 1 29.29 28.73
6 1 − 1 1 34.63 34.07
7 − 1 1 1 26.78 26.22
8 1 1 1 29.07 28.51
9 0 0 0 29.03 30.14
10 0 0 0 29.33 30.14
11 0 0 0 28.82 30.14
12 0 0 0 28.89 30.14