초록
<P><B>Abstract</B></P> <P>Herein, bacterial cellulose (BC) was synthesized by acetobacter xylinum via organic acid pre-hydrolysis liquor of agricultural corn stalk used as carbon source. Acetic acid was applied to pretreat the corn stalk, then, the prehydrolysate was detoxified by sequential steps of activated carbon and ion exchange resin treatment prior to use as carbon source to cultivate acetobacter xylinum. Moreover, the recovery of acetic acid was achieved for facilitating the reduction of cost. The results revealed that the combination method of detoxification treatment was very effective for synthesis of BC, yield could be up to 2.86g/L. SEM analysis showed that the diameter size of BC between 20 and 70mm. In summary, the process that bacterial cellulose was biosynthesized via prehydrolysate from agricultural corn stalk used as carbon source is feasible, and the ability to recover organic acid make it economical, sustainable and green, which fits well into the biorefinery concept.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Green synthesis of bacterial cellulose from pre-hydrolysis liquor was proposed. </LI> <LI> The acetic acid pretreatment was optimized for agricultural corn stalk. </LI> <LI> The combined treatment was applied to the detoxification process. </LI> <LI> The resin treatment act as the recovery of acetic acid. </LI> <LI> Pre-hydrolysis liquor was used as the carbon source for fermentation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>