Abdeltif Amrane

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Ionic liquids (ILs) constitute a new generation of solvents entirely composed of ions. ILs are usually considered as green solvents due to their negligible vapor pressure and other properties, such as non-flammability and high thermostability. Biotechnological applications involving the use of ILs are currently emerging. Reports on enzymatic and whole-cell(More)
Production of biosurfactant by free and alginate-entrapped cells of Pseudomonas fluorescens Migula 1895-DSMZ was investigated using olive oil as the sole carbon and energy source. Biosurfactant synthesis was followed by measuring surface tension and emulsifying index E24 over 5 days at ambient temperature and at neutral pH. Diffusional limitations in(More)
The osmotolerant yeast Hansenula anomala survives in media at low water activity resulting from increasing NaCl concentrations in the culture medium by producing compatible solutes. High salinity resulted in the use of a large part of the assimilated carbon substrate (glucose) for cell maintenance (28%), required for intracellular synthesis compounds and(More)
It is difficult to determine fungal biomass growing on a solid medium directly. Therefore, indirect ways of measuring this growth have to be used instead. For this purpose, the kinetics of growth, of substrate consumption and of release of metabolites must be correlated. This has been carried out for Geotrichum candidum and Penicillium camemberti growing on(More)
Penicillium camembertii was cultivated on a jellified peptone—lactate based medium to simulate the composition of Camembert cheese. Diffusional limitations due to substrate consumption were not involved in the linear growth recorded during culture, while nitrogen (peptone) limitation accounted for growth cessation. Examination of gradients confirmed that(More)
Batch fermentation performances are usually optimized on the basis of an overall criterion, the mean volumetric productivity. For lack of more suitable criteria, a great number of experiments have to be carried out under various conditions, in order to identify the factors acting on product formation rate. With the help of a mathematical model, every batch(More)
Abdallah Bouguettoucha, Béatrice Balannec and Abdeltif Amrane* Laboratory of Chemical Engineering Process, Faculty of Technology, Ferhat Abbas University, DZ-19000 Setif, Algeria National School of Chemistry of Rennes, University of Rennes 1, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, FR-35708 Rennes Cedex 7, France European University of(More)
A non-structured model has been developed to describe the CO2 emission during growth of Geotrichum candidum on a lactate + peptone-based liquid medium. From the nitrogen and carbon mass balances, it was shown that about 50% of the total CO2 released was from the metabolism of the energy supply for biosynthesis, and the remaining from that for maintenance;(More)
The aim of this study was to examine the feasibility of coupling an electrochemical pre-treatment with a biological step in order to degrade phosmet, an organophosphorous pesticide. Preliminary biodegradation experiments showed that the target molecule was not assimilated by activated sludge. The pre-treatment consisted of potentiostatic electrolysis (-1.3(More)
Wassila Arbia1, Leila Arbia1, Lydia Adour1,2 and Abdeltif Amrane3,4* Laboratory of Environmental Biotechnology and Process Engineering (BIOGEP), Department of Environmental Engineering, Polytechnic National School, 10 Avenue Hacene Badi, BP 182, El Harrach, DZ-16200 Algiers, Algeria Department of Chemistry, Faculty of Science, Mouloud Mammeri University of(More)