Production of bacterial cellulose from corn steep liquor and cassava hydrolysates in mechanical agitating fermenter

In this paper corn steep liquor(CSL)and enzymatic hydrolysates of cassava were used as feedstocks to produce bacterial cellulose(BC)in an aerated and agitated fermenter.The yield of BC,residual sugar,dissolved oxygen and bacterial live cells were determined and compared with the result from a glucose-peptone-yeast extract(G + P + Y)culture medium,which was used as a control.When glucose-CSL was used,the yield of BC reached 9.2 g/L but the cost of the nitrogen source CSL was only 15%of the control.When cassava hydrolysates-peptone-yeast extract was used,the yield of BC reached 11.7 g/L,which was 8% higher than that of the control(10.8 g/L).When both CSL and cassava hydrolysates were used,the yield of BC reached 10.1 g/L.Due to their high performance but low cost,CSL and cassava could be widely used in industrial production of BC in future.