Table 1 Effect of various medium components on the production of ethanol and arabitol
From: Production of ethanol and arabitol by Debaryomyces nepalensis: influence of process parameters
Parameter | Substrate consumed (g/L) | Ethanol (g/L) | Arabitol (g/L) | Yield (g/g)* | |
|---|---|---|---|---|---|
1. Substrate | Â | Â | Â | Ethanol | Arabitol |
Sucrose | 82.00 | 9.90 | 3.70 | 0.12 | 0.05 |
Glucose | 84.75 | 9.05 | 7.30 | 0.11 | 0.09 |
Arabinose | 86.70 | 2.43 | 22.70 | 0.03 | 0.26 |
Fructose | 80.40 | 9.84 | 0.70 | 0.12 | 0.01 |
Glycerol | 50.60 | 0.77 | 0.00 | 0.02 | 0.00 |
2. pH | Â | Â | Â | Â | Â |
5.0 | 51.85 | 2.95 | 2.45 | 0.06 | 0.05 |
5.5 | 57.20 | 5.00 | 3.10 | 0.09 | 0.05 |
6.0 | 91.40 | 11.50 | 10.30 | 0.13 | 0.11 |
6.5 | 84.30 | 8.96 | 8.60 | 0.11 | 0.10 |
7.0 | 84.80 | 9.50 | 8.10 | 0.11 | 0.10 |
3. Level of (NH 4 ) 2 SO 4 (g/L) | Â | Â | Â | Â | Â |
3 | 84.70 | 12.20 | 9.00 | 0.14 | 0.11 |
4.5 | 86.50 | 13.30 | 8.50 | 0.15 | 0.10 |
6 | 91.70 | 18.90 | 11.60 | 0.21 | 0.12 |
4. Trace elements | Â | Â | Â | Â | Â |
Positive control | 89.70 | 19.20 | 10.30 | 0.21 | 0.11 |
Negative control | 59.30 | 5.70 | 1.10 | 0.10 | 0.02 |
- ZnSO4 | 95.20 | 14.80 | 1.50 | 0.16 | 0.02 |
- FeCl3 | 98.90 | 12.40 | 1.80 | 0.13 | 0.02 |
- CuSO4 | 59.40 | 6.20 | 1.70 | 0.10 | 0.03 |
- MnSO4 | 54.75 | 6.20 | 2.00 | 0.11 | 0.04 |