Skip to main content

Table 3 Analysis of variance table (ANOVA) for response surface methodology of main effects and interacting effects of parameters in quadratic model for the laccase production by Hypocrea lixii

From: Bioremoval of the synthetic dye malachite green by marine Trichoderma sp

Source Sum of squares df Mean F value p-value Prob > F
Model 48.56277 14 3.468769 2.621997 0.0371*
X1-Temperature (°C) 0.000179 1 0.000179 0.000136 0.0009***
X2-pH 0.717105 1 0.717105 0.54205 0.00729**
X3-Yeast extract (g L-1) 0.069738 1 0.069738 0.052714 0.8215NS
X4-Incubation period (days) 25.37625 1 25.37625 19.18158 0.0005***
 X1X2 0.16657 1 0.16657 0.125908 0.7277NS
 X1X3 0.278689 1 0.278689 0.210657 0.6528NS
 X1X4 0.085404 1 0.085404 0.064556 0.8029 NS
 X2X3 0.081467 1 0.081467 0.06158 0.8074 NS
 X2X4 0.040612 1 0.040612 0.030698 0.8633 NS
 X3X4 0.075826 1 0.075826 0.057316 0.8140 NS
 X12 0.395835 1 0.395835 0.299206 0.5924 NS
 X22 7.268732 1 7.268732 5.494339 0.0333*
 X32 0.080502 1 0.080502 0.06085 0.8085 NS
 X42 19.98253 1 19.98253 15.10453 0.0015**
Residual 19.84424 15 1.322949   
Lack of Fit 6.769842 9 0.752205 0.345196 0.9261NS
Pure Error 13.0744 6 2.179066   
Cor Total 68.40701 29    
  1. Statistically significant ***(P <0.0001), **(P < 0.01), *(P < 0.05), NS Non-significant.