TABLE 4

Fermentation parameters for different strains of M. pulcherrima used in sequential inoculations with S. cerevisiae AWRI1631a

StrainEthanol yield (g ethanol/g sugar)% sugar consumed% (vol/vol) ethanolGrowth rateb (h−1)
AWRI16310.47a ± 0.0299.7a ± 0.29.0a ± 0.31.63a ± 0.09
AWRI11700.33c ± 0.0180.4b ± 1.44.3c ± 0.20.65d ± 0.02
AWRI11490.35b ± 0.0099.7a ± 0.16.9b ± 0.00.78c ± 0.04
AWRI8740.37b ± 0.0268.0c ± 7.45.1c ± 0.50.73c ± 0.05
AWRI11910.41ab ± 0.0782.5b ± 4.85.7bc ± 1.50.14e ± 0.03
AWRI4480.48a ± 0.0276.6bc ± 10.37.3b ± 0.80.29b ± 0.01
  • a The initial sugar concentration was 150 g/liter. Values are means ± standard deviations of three independent replicates. Shared superscript letters without italics in the same column indicate no significant difference; different superscript letters in the same column indicate that differences are significant (LSD test, P < 0.05).

  • b Growth rate was obtained as the slope of the linear part of the growth curve consisting of log OD versus time. Growth rates for M. pulcherrima are given for the period prior to inoculation with S. cerevisiae AWRI1631.