Table 3 compares the results obtained in this study to those from previous reports. It is clear that C. acetobutylicum strain YM1 can produce a greater amount of biobutanol from 20 g/L glucose (3.71 g/L) compared to the corresponding levels of
production by either C. beijerinckii 10132 (3.2 g/L) [23] or C. saccharoperbutylacetonicum N1-4