Improvement of xylanase production by Penicillium canescens 10-10c in solid-state fermentation

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2008)

Solid-state fermentation of xylanase from Penicillium canescens 10-10c in a multi-layer packed bed reactor

in Applied Biochemistry and Biotechnology (2008), 145

Solid-state fermentation of xylanase from Penicillium canescens 10/10c in a multi packed bed reactor (MPBR)

Conference (2007, May 29)

Caractérisation des perturbations extracellulaires induites au sein des réacteurs scale-down par la superposition d'une approche expérimentale et d'une approche numérique

in Récents Progrès en Génie des Procédés - N°95 - Actes des 5èmes Journées francophones sur les réacteurs gaz-liquide et gaz-liquide-solide, 12-15 juin 2007, Carry-le-Rouet, France (2007)

Improvement of xylanase production by Penicillium canescens 10-10c in solid-state fermentation. Pentoses dérivés de la biomasse

Conference (2006, October 22)

Etude de l’effet scale-down sur la levure Saccharomyces cerevisiae (boulardii)

Poster (2006, September)

New silicone based antifoam for fermentation

Conference (2006, April 30)

Foam control in fermentation bioprocess: from simple aeration tests to bioreactor.

in Applied Biochemistry and Biotechnology (2006), 130(1-3), 392-404

In this article, we describe the development of a simple laboratory test for the effective screening of foam control agents on a selected fermentation system, the mass production of Yarrowia lipolytica ... [more ▼]

In this article, we describe the development of a simple laboratory test for the effective screening of foam control agents on a selected fermentation system, the mass production of Yarrowia lipolytica. Aeration testing is based on sparging air in the foaming medium allowing partial reproduction of the gas-liquid hydrodynamic encountered in bioreactors. "Dynamic sparge test," for which measurements are made during foam formation, was used to compare the capacity of three antifoams, based on different technologies, to control the foam produced in the fermentation broth. The selected foam control agents were: (1) an organic antifoam (TEGO AFKS911), (2) a silicone-based emulsion containing in situ treated silica (DC-1520) and (3) a silicone/ organic blend silica-free formulation. The testing results demonstrated dramatic differences among them and showed that the capacity of TEGO AFKS911 and DC-1520 to control the foam generated in the fermentation broth decreases as a function of fermentation time. This occurred to a much lesser extent for the silicone/ organic blend formulation. These results were correlated with the change of the foam nature and the increase of foam stability of the fermentation broth with culture time. The increase in protein content as a function of growth time was correlated with an increase in foam stability and antifoam consumption. A "synthetic fermentation broth" was also developed, by adding both proteins and microorganism to the culture medium. This allowed us to mimic the fermentation broth, shown by the similar antifoams behaviour, and is therefore a simple methodology useful for the selection of appropriate antifoams. [less ▲]

Toward a stochastic formulation of microbial growth in relation to bioreactor performances : case study of an E. coli fed-batch process

in Biotechnology Progress (2006), 22

L'analyse d'image est une solution performante pour la caractérisation des populations microbiennes

Doctoral thesis (2006)