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Table 4 Concentrations of by-products of glycerol, lactic acid, and acetic acid from single-step ethanol productions using combination of raw cassava starch hydrolysis and fermentation at different scales of 5-L, 200-L, and 3000-L fermentations by S. cerevisiae for 72 h

From: Single-step ethanol production from raw cassava starch using a combination of raw starch hydrolysis and fermentation, scale-up from 5-L laboratory and 200-L pilot plant to 3000-L industrial fermenters

Fermentations

Glycerol (g/L)

Lactic acid (g/L)

Acetic acid (g/L)

5-L fermenter

11.39 ± 0.11

0.46 ± 0.00

0.00 ± 0.00

200-L fermenter

11.02 ± 0.03

0.51 ± 0.01

0.23 ± 0.01

3000-L fermenter

9.39 ± 0.07

0.52 ± 0.01

0.59 ± 0.00

  1. No statistic comparisons of those mean values within their own columns (among fermentation scales) because those values are very low and less than those of the values to inhibit yeast cell growth and affect ethanol yield
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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