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Table 4 Fermentation performance of selected yeast isolates at 30 °C and 40 °C in SD media containing glucose/xylose

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. Yeast strains 30 °C 40 °C
Ethanol concentration (g/l) Ethanol yield (g/g) Ethanol productivity (g/l//h) Ethanol efficiency (%) Glycerol concentration (g/l) Acetic acid concentration (g/l) Ethanol concentration (g/l) Ethanol yield (g/g) Ethanol productivity (g/l/h) Ethanol efficiency (%) Glycerol concentration (g/l) Acetic acid concentration (g/l)
Initial sugar = glucose (100.0 g/l)      
1. Angel yeast 48.94 ± 1.38a 0.489 2.04 95.69 1.72 0.314 45.91 ± 1.45 0.471 1.91.2 92.17 4.11 0.361
2. S. cerevisiae CEN-PK-122 48.79 ± 0.61 0.488 2.032 95.5 2.414 0.624 41.58 ± 1.08 0.43 1.732 84.148 2.722 0.936
3. S. cerevisiae NGY1 47.59 ± 2.34 0.485 1.983 94.91 3.744 0.37 45.65 ± 2.44 0.47 1.902 91.976 4.374 0.464
4. S. cerevisiae NGY10 49.77 ± 0.34* 0.497 2.073 97.397 4.733 0.377 46.81 ± 3.11* 0.478 1.950 93.542 5.206 0.421
5. K. marxianus NCIM 3465 42.19 ± 3.08 0.48 1.757 93.933 3.945 0.476 41.22 ± 2.87 0.45 1.7175 88.062 4.016 0.465
6. K. marxianus NGY8 46.50 ± 0.99 0.473 1.937 92.563 2.379 0.395 42.46 ± 2.00 0.461 1.769 90.215 3.025 0.395
7. C. glabrata CBS138 43.63 ± 2.23 0.472 1.817 92.367 3.647 0.323 42.72 ± 2.55 0.459 1.78 89.823 4.276 0.316
8. C. glabrata NGY7 47.81 ± 2.11 0.48 1.992 93.933 4.705 0.426 46.09 ± 1.44 0.46 1.92 90.02 3.406 0.447
9. P. kudriavzevii NGY12 45.63 ± 2.71 0.469 1.901 91.78 2.364 0.339 43.60 ± 1.88 0.455 1.816 89.04 2.064 0.149
10. P. kudriavzevii NGY20 43.44 ± 1.38 0.47 1.81 91.976 2.161 0.317 42.12 ± 1.45 0.462 1.755 90.41 2.173 0.344
11. C. tropicalis NGY19 41.49 ± 1.96 0.43 1.81 84.15 2.161 0.317 41.77 ± 1.98 0.429 1.740 84.0 0.918 0.447
Initial sugar = xylose (50.0 g/l)   
12. S. stipitis NCIM3507 6.038 ± 0.31 0.416 0.251 81.321 0.037 0.045 3.37 ± 0.128 0.32 0.14 62.63 0.037 0.045
13. S. stipitis NCIM3498 6.393 ± 0.27 0.439 0.266 86.1 0.021 0.05 3.75 ± 0.133 0.325 0.156 63.625 0.021 0.05
14. K. marxianus NGY8 1.525 ± 0.013 0.359 0.063 70.385 0.048 0.033 1.48 ± 0.025 0.349 0.061 68.31 0.048 0.033
15. C. shehatae NCIM 3500 5.821 ± 0.02 0.320 0.242 62.765 1.11 0.311 3.74 ± 0.016 0.284 0.155 55.58 1.11 0.311
16. C. lusitaniae NCIM 3484 1.509 ± 0.01 0.444 0.062 86.930 0.005 0.082 0.601 ± 0.023 0.430 0.025 84.189 0.005 0.082
17. W. anomalus NGY2 0.704 ± 0.03 0.159 0.029 31.155 0.028 0.046 0.614 ± 0.019 0.138 0.025 27.172 0.028 0.046
18. O. thermophila NGY11 0.445 ± 0.03 0.089 0.018 17.564 0.002 0.17 0.312 ± 0.013 0.021 0.013 4.11 0.002 0.17
19. C. glabrata NGY14 0.11 ± 0.006 0.141 0.005 27.597 0.002 0.03 0.06 ± 0.005 0.005 0.0025 0.98 0.003 0.01
20. P. kudriavzevii NGY12 0.544 ± 0.025 0.405 0.023 79.446 0.001 0.01 0.444 ± 0.025 0.189 0.018 37.131 0.001 0.01
21. C. dubliniensis NGY5 0.535 ± 0.03 0.137 0.022 26.914 0.093 0.09 0.211 ± 0.004 0.003 0.008 0.0 0.093 0.09
22. C. tropicalis NGY22 0.794 ± 0.03 0.235 0.033 46.120 0.12 0.071 0.541 ± 0.028 0.228 0.022 44.690 0.12 0.071
  1. aMean ± standard deviation, n = 3; Fermentation volume: 50 ml; pH-5.4; inoculums 5.0% v/v ≈ 1.0 × 107 cells/ml, fermentation time 24 h
  2. * Statistical student t-test of isolate NGY10 with reference strains CEN-PK-122 and Angel yeast for glucose fermentation at 30 °C and 40 °C was performed, and show significance, i.e. p < 0.05