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Table 3 Statistical analysis of variance (ANOVA) for the selected factorial design to optimization of xylanase production by Aspergillus oryzae

From: Statistical optimization of xylanase production, using different agricultural wastes by Aspergillus oryzae MN894021, as a biological control of faba bean root diseases

Source Sum of squares df Mean square Β coefficient F value P value  
Model 0.7474 17 0.0440 0.6456 24.62 < 0.0001 Significant
A-Substrate concentration 0.1201 1 0.1201 0.0613 67.23 < 0.0001  
B-Yeast extract 0.2145 1 0.2145 0.0819 120.13 < 0.0001  
C-(NH4)2SO4 0.3160 1 0.3160 0.0994 176.97 < 0.0001  
AD 0.0066 1 0.0066 0.0144 3.70 0.0749  
AE 0.0045 1 0.0045 −0.0119 2.53 0.1342  
CD 0.0112 1 0.0112 −0.0187 6.30 0.0250  
CE 0.0060 1 0.0060 0.0137 3.39 0.0870  
DE 0.0045 1 0.0045 −0.0119 2.53 0.1342  
ABD 0.0091 1 0.0091 −0.0169 5.10 0.0404  
ACD 0.0055 1 0.0055 −0.0131 3.09 0.1008  
ACE 0.0055 1 0.0055 0.0131 3.09 0.1008  
BCD 0.0112 1 0.0112 0.0187 6.30 0.0250  
BCE 0.0040 1 0.0040 0.0113 2.27 0.1543  
BDE 0.0045 1 0.0045 0.0119 2.53 0.1342  
ABCD 0.0066 1 0.0066 0.0144 3.70 0.0749  
BCDE 0.0045 1 0.0045 0.0119 2.53 0.1342  
ABCDE 0.0128 1 0.0128 −0.0200 7.17 0.0180  
Residual 0.0250 14 0.0018     
Cor total 0.7724 31      
  1. R2 = 0.9676, adjusted R2 = 0.9283, predicted R2 = 0.8309, coefficient of variation (C.V. %) = 6.55, and adequate precision = 18.0638