Zobrazeno 1 - 10
of 174
pro vyhledávání: '"J. Baratti"'
Autor:
Erika Zago, Thais Fabiana Chan Salum, J. Baratti, V. Turra, Nadia Krieger, David A. Mitchell, Alessandra Machado Baron
Publikováno v:
Biocatalysis and Biotransformation. 26:197-203
The synthesis of ethyl-oleate by the lipase from the newly isolated strain Burkholderia cepacia LTEB11 in three different systems has been studied – immobilization on a hydrophobic support (Accurel EP 100®), encapsulation in reverse micelles, and
Publikováno v:
Journal of Molecular Catalysis B: Enzymatic. 49:104-112
New methods were adapted to screen, fast and easily, the lipase specificity (topo- or enantio-selectivity) on crude extracellular extracts from thermophilic fungi. Substrate acyl chain length specificity was tested using p -nitrophenyl esters and vin
Autor:
Paramasamy Gunasekaran, Soundarapandian Velmurugan, Rengasamy Kannan, E. Alvarez-Macarie, G. Mukundan, Nadra Aït-Abdelkader, J. Baratti
Publikováno v:
Biotechnology Letters. 17:635-642
The Zymomonas mobilis gene sacB that encodes the extracellular levansucrase was cloned and expressed in Escherichia coli. The gene product exhibited both sucrose hydrolysis activity and levan forming capability. Sub-cellular fractionation of E. coli
Autor:
J. Baratti, Nadra Ait-Abdelkader
Publikováno v:
Biotechnology Techniques. 9:315-320
The fermentation of an equimolar mixture of glucose and fructose into ethanol and sorbitol by a glucose negative mutant ofZymomonas mobilis was monitored. The results were analyzed using a recently described method based on polynomial fitting and cal
Publikováno v:
Biotechnology Letters. 15:1179-1184
Growth and ethanol production by three strains of the bacterium Zymomonas mobilis were tested, at 40°C, in a medium containing cellulose hydrolysate (hexose fraction) as carbon source. The thermotolerant mutant C107 exhibited the best growth compare
Autor:
J. Baratti, Nadra Ait-Abdelkader
Publikováno v:
Biotechnology Techniques. 7:423-428
The fermentation of an equimolar mixture of glucose and fructose into ethanol and sorbitol by a fructose negative mutant of Zymomonas mobilis is analysed using a recently described methodology (Ait-Abdelkader and Baratti, Biotechnol. Tech. 1993,329
Autor:
Nadra Ait-Abdelkader, J. Baratti
Publikováno v:
Biotechnology Techniques. 7:329-334
A new method is presented to calculate the kinetic and yield parameters of a fermentation. This method is based on polynomial fitting of the variations of substrates and biomass concentrations with time and calculation of instantaneous and overall pa
Autor:
Moussa Ettalibi, J. Baratti
Publikováno v:
Biocatalysis. 5:175-182
The thermostable inulinases from the fungus Aspergillus ficuum were immobilized by covalent binding on porous glass beads of different porosities (pore diameter 125 to 1170 A). The highest retention of activity (60%) and highest activity per g of sup
Autor:
S. C. Park, J. Baratti
Publikováno v:
Biotechnology and Bioengineering. 38:304-313
A new osmotolerant mutant strain of Zymomonas mobilis was successfully used for ethanol production from beet molasses. Addition of magnesium sulfate to hydrolyzed molasses allowed repeated growth without the need of yeast extract addition. The kineti
Publikováno v:
Biotechnology Letters. 12:581-586
The peparative synthesis of 35 short chain flavour esters by lipases fromMucor miehi, Aspergillus sp.,Candida rugosa andRhizopus arrhizus was investigated in organic media. Acetic, propionic, butyric, valeric and caproic acids, as well as methanol, e