Enhancing Bioethanol Productivity Using Alkali-Pretreated Empty Palm Fruit Bunch Fiber Hydrolysate

Table 1

Comparison of ethanol production among three yeast strains.

Yeast strain	Saccharomyces cerevisiae; W303-1A	Kluyveromyces marxianus; CBS1555	Scheffersomyces stipites; CBS5776
Max. ethanol (g/L)	14.5±0.2	10.6±0.1	10.1±0.2
Ethanol yield; (EtOH g/ g EPFBFs)	0.14±0.01	0.11±0.01	0.10±0.01
Ethanol productivity (g/L/h)	0.81±0.01	0.59±0.01	0.56±0.01
Inoculation	5.3±0.1	5.2±0.1	5.4±0.1
Initial glucose (g/L)	12.3±1.5	12.3±1.5	12.3±1.5
Residual xylose (g/L)	7.3±0.1	6.2±0.1	5.4±0.1