Table 2: Matrix of Plackett-Burman design and response values.

TrialSpecific growth rate (d−1)

111−11−1−1−10.222
2−1111−1110.267
3−1−1−1111−10.282
41−111−11−10.262
5−1−1−1−1−1−1−10.124
6−11−1−1−1110.102
7−111−11−1−10.217
81−1−1−11110.287
911−111−110.319
10111−111−10.251
11−1−1111−110.305
121−11−1−1−110.196