1. Enzyme Bioconversion Unit (04/UR/09-04); National School of Engineering; Sfax University; P.O. Box 1173-3038 Sfax Tunisia
2. Service de Chromatographie Purification et analyse de polysaccharides CE RMAV-CNRS; 601 rue de la Chimie 38041 Grenoble Cedex 9 France
3. Common Service Unit of Bioreactor Coupled with an Ultrafilter; National School of Engineering; P.O. Box 1173-3038 Sfax University Tunisia