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Bioresources and Bioprocessing

Table 3 Ethanol yields and conversion efficiencies for all treatments in dry grind process

From: Germ soak water as nutrient source to improve fermentation of corn grits from modified corn dry grind process

Treatments

Final ethanol concentration (%)

Ethanol conversion efficiency (%)

Fermentation rates (% v/v/h)

Control

12.79 d

62.44 e

0.208 d

Protease

16.20 a b

82.83 a b c

0.324 c

Germ soak water 2 h 30 °C

14.52 c

74.10 d

0.318 c

Germ soak water 12 h 30 °C-PS

16.14 a b

82.67 a b c

0.492 b

Germ soak water 12 h 30 °C-FS

16.32 a

82.14 b c

0.536 a

B-vitamins

16.39 a

84.02 a

0.484 b

B-vitamins + Germ soak watera

16.54 a

83.43 ab

0.531 a

  1. Means followed by the same letter in one column are statistically not different (at P < 0.05)
  2. PS partial slurry, FS full slurry
  3. aPartial slurry of 12 h 30 °C germ soak water
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