초록
<P><B>Abstract</B></P> <P>In this study, the production of bioethanol and value added <SMALL>D</SMALL>-psicose from Jerusalem artichoke (JA) was attempted by an enzymatic method. An enzyme mixture used for hydrolysis of 100mgmL<SUP>−1</SUP> JA. The resulting concentrations of released <SMALL>D</SMALL>-fructose and <SMALL>D</SMALL>-glucose were measured at approximately 56mgmL<SUP>−1</SUP> and 15mgmL<SUP>−1</SUP>, respectively. The <SMALL>D</SMALL>-psicose was epimerized from the JA hydrolyzate, and the conversion rate was calculated to be 32.1%. The residual fructose was further converted into ethanol at 18.0gL<SUP>−1</SUP> and the yield was approximately 72%. Bioethanol and <SMALL>D</SMALL>-psicose were separated by pervaporation. This is the first study to report simultaneous <SMALL>D</SMALL>-psicose production and bioethanol fermentation from JA.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Jerusalem artichoke is a promising biomaterial for generating EtOH and <SMALL>D</SMALL>-psicose. </LI> <LI> Oligofuctan in Jerusalem artichoke tuber hydrolyzed by enzymatic process. </LI> <LI> <SMALL>D</SMALL>-Psicose and bioethanol was successfully separated and purified by pervaporation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P> <P>Jerusalem artichoke contain high content of inulin. Inulin is able to simultaneously produce the bioethanol and <SMALL>D</SMALL>-psicose by enzymatic hydrolysis, sugar conversion and ethanol fermentation.</P>