Amylolytic enzymes from Aspergillus hennebergi (A. niger Group): Purification and characterization of amylases from solid and liquid cultures |
| |
Authors: | Didier Alazard Jacques F. Baldenspeger |
| |
Affiliation: | ORSTOM Department of Microbiology, IRCHA, B.P. 1, 91710 Vert-le-Petit France |
| |
Abstract: | Two glucoamylases (I and II) were produced during solid-state culture of Aspergillus hennebergi (A. niger group) on cassava meal, whereas one glucoamylase and one alpha-amylase were synthesized by the mould in liquid culture. These glucoamylases were acidic proteins with thermotolerant activities. Glucoamylase I was not a glycoprotein, but glucoamylase II and the glucoamylase from liquid cultures contained 15% of sugars. The alpha-amylase was significantly less thermotolerant and of smaller molecular weight. The influence of culture conditions on the production of different amylases by the same Aspergillus strain on the same substrate is discussed. |
| |
Keywords: | To whom enquiries should be addressed |
本文献已被 ScienceDirect 等数据库收录! |