operation documented feasibility of ethanol production parallel
to substrate utilization. During SBES operation, ethanol production
of 1.45% w/v was observed at initial stages (10th day), followed by
an increase and attained a maximum value on 20th day (4.85%
w/v) of operation. After 20th day a decrease in ethanol production
(2.15% w/v) was observed till 30th day of operation.