Research Article
Bioethanol Production from Stalk Residues of Chiquere and Gebabe Varieties of Sweet Sorghum
Table 4
Analysis of variance (ANOVA) of Chiquere and Gebabe variety ethanol yield of sweet sorghum.
| Chiquere variety | Gebabe variety | Sources | Sum of squares | Degree of freedom | Mean squares | F values | value ( > F) | Sources | Sum of squares | Degree of freedom | Mean squares | F values | value ( > F) |
| Model | 7.81 | 9 | 0.87 | 73.59 | <0.0001 | Model | 2.24 | 9 | 0.58 | 120.30 | <0.0001 |
| A, yeast inoculum size | 0.42 | 1 | 0.42 | 35.90 | <0.0001 | A, yeast inoculum size | 0.28 | 1 | 0.28 | 58.16 | 0.0001 |
| B, pH | 6.125E − 004 | 1 | 6.125E − 004 | 0.052 | 0.9285 | B, pH | 0.11 | 1 | 0.11 | 21.28 | 0.0023 |
| C, dilution | 3.42 | 1 | 3.42 | 290.02 | <0.0001 | C, dilution | 3.92 | 1 | 3.92 | 810.64 | <0.0001 |
| AB | 0.096 | 1 | 0.096 | 8.15 | <0.0001 | AB | 0.048 | 1 | 0.048 | 10.01 | 0.0158 |
| AC | 0.79 | 1 | 0.79 | 67.19 | <0.0001 | AC | 0.53 | 1 | 0.53 | 110.20 | <0.0001 |
| BC | 0.038 | 1 | 0.038 | 3.23 | 0.0012 | BC | 0.010 | 1 | 0.010 | 2.07 | 0.1936 |
| A2 | 0.44 | 1 | 0.44 | 37.43 | <0.0001 | A2 | 6.737E − 003 | 1 | 6.737E − 003 | 1.39 | 0.2764 |
| B2 | 1.28 | 1 | 1.28 | 108.53 | <0.0001 | B2 | 0.024 | 1 | 0.024 | 4.90 | 0.0625 |
| C2 | 1.02 | 1 | 1.02 | 86.19 | <0.0001 | C2 | 0.32 | 1 | 0.32 | 65.85 | <0.0001 |
| Residual | 0.083 | 7 | 0.012 | - | - | Residual | 0.034 | 7 | 4.836E − 003 | - | - |
| Lack of fit | 0.075 | 3 | 0.025 | 12.42 | 0.07899 | Lack of fit | 5.85E − 003 | 3 | 1.950E − 003 | 0.28 | 0.8390 |
| Pure error | 8.000E − 003 | 4 | 2.00E − 003 | - | - | Pure error | 0.028 | 4 | 7.000E − 003 | - | - |
| Cor total | 7.89 | 16 | - | - | - | Cor total | 5.27 | 16 | - | - | - |
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E = 10X, where X is the power of decimal number.
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