For simultaneous saccharification and ethanol fermentation,
180 g (dry weight) of the brown alga L. japonica was incubated in
1 L of 0.1 N HCl at 121 C for 15 min. The hydrolysate was cooled
and pH-adjusted to 5.5 and 0.01 g of commercial hydrolytic enzymes
were added per g of dry algae. The mixture was inoculated
with 10% (v/v) of overnight-cultured S. cerevisiae or E. coli KO11
culture grown and incubated at 30 C with shaking at 150 rpm.
For sequential fermentation, the hydrolysate was fermented first
with S. cerevisiae, the culture was centrifuged at 1000g for
10 min and the supernatant was inoculated with 10% (v/v) of
E. coli KO11 culture and incubated at 30 C for 24 h.
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