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Table 1 Plackett–Burman design for screening the variables, effect of each variable on 2,3-BD production, and statistical analysis of variables in the fermentation of glucose using strain 10-1-A

From: A newly isolated Bacillus licheniformisstrain thermophilically produces 2,3-butanediol, a platform and fuel bio-chemical

Factor Variable Low level High level Coefficient Standard error T-value P-value
YE X 1 2 4 2.061 0.5149 4 0.01 a
CSLP X 2 5 10 2.335 0.5149 4.53 0.006 a
Sodium acetate X 3 2 4 2.321 0.5149 4.51 0.006 a
K2HPO4·3H2O X 4 2 4 1.051 0.5149 2.04 0.097
Triammonium citrate X 5 1 2 −1.160 0.5149 −2.25 0.074
MgSO4·7H2O X 6 0.25 0.5 −0.567 0.5149 −1.1 0.321
  1. R2 = 0.9309, R2 (Adj) = 0.8480.
  2. a Statistically significant at 95% of confidence level (p < 0.05).