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Table 6 Fermentation kinetics of S. cerevisiae NGY10 in various fermentation media

From: Evaluation of divergent yeast genera for fermentation-associated stresses and identification of a robust sugarcane distillery waste isolate Saccharomyces cerevisiae NGY10 for lignocellulosic ethanol production in SHF and SSF

S. no. Kinetic parameters Synthetic media containing glucose Acid-pretreated rice straw hydrolysate Alkali-pretreated rice straw hydrolysate
30 °C 40 °C 30 °C 40 °C 30 °C 40 °C
1. Initial sugar (St) (g/l) 100 100 26.38 26.38 17.15 17.15
2. Residual sugar (St) (g/l) 3.82 3.64 0.433 0.551 0.71 1.832
3. Sugar consumption rate (QS) (g/l/h) 6.412 5.353 1.47 1.22 0.913 0.765
4. Sugar consumed (%) 96.18 96.36 100 99.449 99.29 98.167
5. Fermentation time (h) 15 18 18 18 18 18
6. Maximum ethanol concentration (g/l) 47.59 46.81 12.65 12.25 7.83 7.18
7. Ethanol yield coefficient, Yp/s (g/g) 0.495 0.485 0.479 0.474 0.476 0.468
8. Ethanol production rate (QP) (g/l/h) 3.173 2.6 0.703 0.680 0.435 0.398
9. Fermentation efficiency (%) 96.83 95.06 93.84 92.81 93.204 91.728
11. Cell biomass concentration (g/l) 7.51 7.21 7.54 6.96 5.74 4.94
12. Cell biomass production rate, (QX) (g/l/h) 0.5 0.40 0.418 0.386 0.318 0.274
13. Specific growth rate (μ) (h−1) 0.226 0.21 0.18 0.161 0.178 0.155