Research Article
Optimization of the Nutritional Parameters for Enhanced Production of B. subtilis SPB1 Biosurfactant in Submerged Culture Using Response Surface Methodology
Table 3
Estimated effect, regression coefficient, and corresponding , values and confidence level of each variable described for biosurfactant production in Plackett Burman design experiments.
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With SE is the standard error and .exp is the value of variables determined by Student’s -test. (***): significant at the level > 99.9% (for value ). (**): significant at the levels comprised between 99% and 99.9% (for value ). (*): significant at the levels comprised between 95% and 99% (for value ). NS: NonSignificant (Terms were considered NS for value ). |