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Table 2 Ethanol yields and conversion efficiencies (mean ± standard deviation of triplicate runs)

From: Dry-grind processing using amylase corn and superior yeast to reduce the exogenous enzyme requirements in bioethanol production

Conditions Final ethanol concentration (%) Final glycerol concentration (%) Ethanol yield (gal/bu, dry basis) Conversion efficiency (%)
Conventional corn_ conventional yeast 17.62 ± 0.19 e 1.38 ± 0.03 a 2.86 ± 0.06 d 81.97 ± 1.26 c
Conventional corn_SY_0 % GA 17.46 ± 0.22 e 0.38 ± 0.01 g 2.84 ± 0.03 d 81.30 ± 0.85 c
Conventional corn_SY_25 % GA 18.45 ± 0.22 b c 0.74 ± 0.08 d 3.04 ± 0.03 a b 87.07 ± 0.91 a
Conventional corn_SY_50 % GA 18.73 ± 0.15 a b 0.91 ± 0.04 c 3.09 ± 0.02 a 88.50 ± 0.55 a
15 % Amylase corn_ conventional yeast 18.05 ± 0.23 d 1.24 ± 0.03 b 2.98 ± 0.06 b c 85.07 ± 1.80 b
15 % Amylase corn_SY_0 % GA 16.73 ± 0.06 f 0.30 ± 0.01 g 2.72 ± 0.01 e 77.57 ± 0.33 d
15 % Amylase corn_SY_25 % GA 18.31 ± 0.18 c d 0.54 ± 0.08 f 2.96 ± 0.01 c 84.50 ± 0.33 b
15 % Amylase corn_SY_50 % GA 18.97 ± 0.35 a 0.64 ± 0.06 e 3.05 ± 0.04 a 87.01 ± 1.26 a
  1. SY superior yeast
  2. Means followed by the same letter in one column are statistically not different (at P < 0.05)