BioMed Research International / 2010 / Article / Tab 2

Research Article

Comparative Study on Two Commercial Strains of Saccharomyces cerevisiae for Optimum Ethanol Production on Industrial Scale

Table 2

Table 1 Effect of varying concentrations of urea (as nitrogen source) on ethanol and acetic acid production by two commercial strains* of yeast on sugarcane molasses in fed-batch cultures.

Urea concentration (ppm)Analysis
Ethanol yield (%v/v)Residual sugar (%)Final brix (º)Final cell count (106/mL)Acetic acid (mg/100 mL)PTT (sec.)
SIERSIERSIERSIERSIERSIER

1008.07.30.980.9510.319.9129030474.1438.651010
1508.37.90.910.899.539.9130634038.0435.311311
2007.97.51.051.0810.5310.8028036589.0639.5698
2507.57.01.151.2011.1311.0526528998.7548.0876

*SI: Saf-Instant and ER: Ethanol Red.

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