초록
<P><B>Abstract</B><P>Experiments were performed to find potential sources for enzyme production for the pulp and paper industry and for biological ethanol production by screening the cellulase, xylanase and β-xylosidase activities of 36 species of <I>Penicillium</I> isolated from various wood materials in Korea. Rice straw powder (RiceP), birchwood xylan (BirchX), and beechwood xylan (BeechX) were supplied as individual carbon sources for the <I>Penicillium</I> species. All <I>Penicillium</I> species tested in this study showed little cellulase activity, but some species exhibited remarkably high xylanase and β-xylosidase activities, as determined by a filter paper assay. <I>P. oxalicum</I> showed the greatest xylanase activity on RiceP (158.70 U ml<SUP>-1</SUP>). On the other hand, <I>P. brevicompactum</I> produced the highest active β-xylosidase on BirchX (6.25 U ml<SUP>-1</SUP>).</P></P>