http://www.webreview.dz/ Webreview est un site fédérateur des revues scientifiques. Il met à la disposition des utilisateurs un ensemble de revues scientifiques algériennes couvrant tous les domaines. Webreview est ouvert à toute revue désireuse de publier son contenu en ligne soit en mode d'accès complet ou restreint permettant ainsi la valorisation de la recherche scientifique en Algérie. Webreview et un projet développé par le CERIST au sein de la Division Recherche et Développement en Sciences de l'Information. Pour contacter Webreview par émail : webreview@mail.cerist.dz Pour contacter Webreview par courrier, fax ou téléphone : Centre de Recherche sur l'Information Scientifique et Technique (CERIST) Rue des 03 frères AISSOU, Ben-Aknoun, Alger, Algérie Tél/Fax : +(213)(0) 21.91.21.98 fr SPIP - www.spip.net http://www.webreview.dz/spip.php?article226 http://www.webreview.dz/spip.php?article226 2005-07-18T14:44:45Z text/html fr Penninckx M., Salhi O., Saradouni N. Lignocellulosic materials Carboxymethylcellulose Xylan Straw Submerged culture <p>A local isolate of Aspergillus fumigatus (Fresenius) albino mutant obtained from rotten wood shavings, grew at 45°C on a solid medium containing cellulose as carbon source. This fungus can utilize a variety of lignocellulosic substrates, such as Kraft paper pulp, straw, microcrystalline cellulose and filter paper. The highest endoglucanase (CMC-ase), b-xylanase and b-glucosidase activities were obtained in shaken flasks at 45°C, with mainly oat straw as sole carbon source. CMC-ase and (...)</p> - <a href="http://www.webreview.dz/spip.php?rubrique81" rel="directory">Numéro 12</a> / <a href="http://www.webreview.dz/spip.php?mot1066" rel="tag">Lignocellulosic materials</a>, <a href="http://www.webreview.dz/spip.php?mot1069" rel="tag">Carboxymethylcellulose</a>, <a href="http://www.webreview.dz/spip.php?mot1073" rel="tag">Xylan</a>, <a href="http://www.webreview.dz/spip.php?mot1075" rel="tag">Straw</a>, <a href="http://www.webreview.dz/spip.php?mot1077" rel="tag">Submerged culture</a> <div class='rss_chapo'><p>A local isolate of Aspergillus fumigatus (Fresenius) albino mutant obtained from rotten wood shavings, grew at 45°C on a solid medium containing cellulose as carbon source. This fungus can utilize a variety of lignocellulosic substrates, such as Kraft paper pulp, straw, microcrystalline cellulose and filter paper. The highest endoglucanase (CMC-ase), b-xylanase and b-glucosidase activities were obtained in shaken flasks at 45°C, with mainly oat straw as sole carbon source. CMC-ase and b-xylanase activities showed the highest values (3.50 U/ml and 33 U/mI) at pH 4.0 and 5.0 respectively, and 70°C. b-glucosidase activity was maximal at 65°C (43 U/ml ), CMC-ase and b-xylanase enzymes were active in a large pH spectrum (3.0 to 8.0) and showed high thermostability at 60°C and above, especially for CMC-ase.</p></div>