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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     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      
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)      
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      
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
  1. * YP/S is the amount of product formed (g) per gram of substrate consumed.