Table 5.
Fit statistics of low-alcohol marula fruit beer production models using Metschnikowia pulcherrima, Pichia fermentans, and P. kluyveri.
| M. pulcherrima | P. fermentans | P. kluyveri | |
|---|---|---|---|
| SG | |||
| CV | 0.28 | 0.62 | 0.36 |
| R2 | 0.94 | 0.85 | 0.87 |
| Adjusted R2 | 0.90 | 0.74 | 0.77 |
| Predicted R2 | 0.58 | −0.07 | 0.06 |
| Adequate Precision | 13.10 | 7.32 | 7.61 |
| TTA | |||
| CV | 29.02 | 27.87 | 30.48 |
| R2 | 0.63 | 0.63 | 0.63 |
| Adjusted R2 | 0.36 | 0.36 | 0.37 |
| Predicted R2 | −1.64 | −1.64 | −1.63 |
| Adequate Precision | 3.58 | 3.76 | 3.65 |
| pH | |||
| CV | 5.34 | 5.40 | 5.16 |
| R2 | 0.52 | 0.59 | 0.65 |
| Adjusted R2 | 0.18 | 0.30 | 0.40 |
| Predicted R2 | −2.39 | −1.92 | −1.49 |
| Adequate Precision | 4.68 | 5.42 | 5.65 |
| Alcohol | |||
| CV | 12.20 | 13.35 | 23.02 |
| R2 | 0.97 | 0.98 | 0.94 |
| Adjusted R2 | 0.96 | 0.96 | 0.90 |
| Predicted R2 | 0.82 | 0.85 | 0.59 |
| Adequate Precision | 21.89 | 20.05 | 12.11 |
CV – coefficient of variation; SG – specific gravity; TTA – total titratable acidity.