Charles Ghommidh | UM - Academia.edu (original) (raw)
Uploads
Papers by Charles Ghommidh
Capacitance measurements can give valuable information on the physiological state of a culture. S... more Capacitance measurements can give valuable information on the physiological state of a culture. Sequential nutrient limitations for batch and fed-batch CHO fermentations were monitored online.
Biotechnology and Bioengineering, 1992
The sucrose hydrolysis activity of dense spherical yeast flocs, cultivated on a sucrose medium in... more The sucrose hydrolysis activity of dense spherical yeast flocs, cultivated on a sucrose medium in a continuous reactor with internal settler, is nearly proportional to the particle surface. From computer simulation, in good agreement with experimental determinations, the calculated sucrose penetration depth is in the range 0.2–0.3 mm, a dimension smaller than the usual diameter of strongly flocculating yeast particles. From specific gravity determinations, the flocs can be considered as homogeneous and cannot exhibit a fractal structure, reported in the literature for a number of microbial aggregates. However, the analysis of the sucrose hydrolysis rates reveals that the cell density may be lower in the outer layer of the flocs. © 1992 John Wiley & Sons, Inc.
Electronic Journal of Biotechnology, 2010
Sensors and Actuators B-chemical, 2006
Capacitance measurements can give valuable information on the physiological state of a culture. S... more Capacitance measurements can give valuable information on the physiological state of a culture. Sequential nutrient limitations for batch and fed-batch CHO fermentations were monitored online.
Biotechnology and Bioengineering, 1992
The sucrose hydrolysis activity of dense spherical yeast flocs, cultivated on a sucrose medium in... more The sucrose hydrolysis activity of dense spherical yeast flocs, cultivated on a sucrose medium in a continuous reactor with internal settler, is nearly proportional to the particle surface. From computer simulation, in good agreement with experimental determinations, the calculated sucrose penetration depth is in the range 0.2–0.3 mm, a dimension smaller than the usual diameter of strongly flocculating yeast particles. From specific gravity determinations, the flocs can be considered as homogeneous and cannot exhibit a fractal structure, reported in the literature for a number of microbial aggregates. However, the analysis of the sucrose hydrolysis rates reveals that the cell density may be lower in the outer layer of the flocs. © 1992 John Wiley & Sons, Inc.
Electronic Journal of Biotechnology, 2010
Sensors and Actuators B-chemical, 2006