Publication

Calorimetry and energetic efficiencies in aerobic and anaerobic microbial growth

Related publications (44)

Immobilization as a tool to control fermentation in yeast-leavened refrigerated dough

Urs von Stockar, Ian William Marison, Véronique Breguet, Raphaël Gugerli

In order to extend the shelf life of refrigerated dough, a new method based on thermo-gelling immobilization is proposed. This slows fermn. at low temps. (

2004

A new tool for the study of polymerization under supercritical conditions - preliminary results

Thierry Meyer, Sophie Fortini, Philip Nising, Frédéric Lavanchy

Efficient stirring is needed to realize heat flow anal. with a thermally homogeneous medium. Because dispersion polymn. with supercrit. fluids can be destabilized under stirring, a preliminary target has been to find a compromise between synthesis and basi ...

2004

Reaction calorimetry in supercritical carbon dioxide - methodology development

Thierry Meyer, Sophie Fortini, Frédéric Lavanchy

Reaction calorimetry is an efficient tool used to obtain kinetic, thermodn. and safety data. A reaction calorimeter, RC1e-HP350, developed in collaboration with Mettler-Toledo GmbH, allows investigating chem. reactions under supercrit. conditions. The main ...

2004

Control of yeast fed-batch process through regulation of extracellular ethanol concentration

Urs von Stockar, Sergio Valentinotti, Christopher Cannizzaro

At high growth rates, the biomass yield of baker's yeast (Saccharomyces cerevisiae) decreases due to the prodn. of ethanol. For this reason, it is std. industrial practice to use a fed-batch process whereby the specific growth rate, m, is fixed at a level ...

Springer-Verlag2004

AtSGP1, AtSGP2 and MAP4K alpha are nucleolar plant proteins that can complement fission yeast mutants lacking a functional SIN pathway

Viesturs Simanis, Andrea Krapp

In the fission yeast Schizosaccharomyces pombe, the onset of septum formation is signalled via the septation initiation network (SIN) involving several protein kinases and a GTPase. Arabidopsis thaliana and Brassica napus proteins homologous to fission yea ...

2004

Quantitative comparison of transient growth of Saccharomyces cerevisiae, Saccharomyces kluyveri, and Kluyveromyces lactis

Urs von Stockar, Christoph Herwig

A multitude of metabolic regulations occur in yeast, particularly under dynamic process conditions, such as under sudden glucose excess. However, quantification of regulations and classification of yeast strains under these conditions have yet to be elucid ...

2003

Supercritical calorimetry: an emerging field

Thierry Meyer, Sophie Fortini, Frédéric Lavanchy

Calorimetry (adiabatic, isothermal, differential, oscillating or acoustic) is generally based on heat-flow measurements of the studied system. Most of its applications are dedicated to kinetic-parameter detn., safety studies and process optimization, phase ...

Schweizerische Chemische Gesellschaft2002

Extractive Bioconversion of 2-Phenylethanol from L-Phenylalanine by Saccharomyces cerevisiae

Urs von Stockar, Ian William Marison

The bioconversion of L-phenylalanine (L-Phe) to 2-phenylethanol (PEA) by the yeast Saccharomyces cerevisiae is limited by the toxicity of the product. PEA extn. by a sep. org. phase in the fermenter is the ideal in situ product recovery (ISPR) technique to ...

2002

The crystallization kinetics of polyamide-12

Pierre-Etienne Bourban, John Christopher Plummer

The crystallization kinetics of polyamide-12 has been investigated using a combination of differential scanning calorimetry (DSC) and hot-stage optical microscopy. The DSC data for isothermal crystallization were consistent with a simple two-parameter Avra ...

2001

A process for the in-situ extraction of fermentation broths

Urs von Stockar, Ian William Marison

A process is provided for the in-situ extn. of a fermn. product esp. for products which result from the transformation of an amino acid and which are sol. in the fermn. broth. The sol. product is then removed from aq. phase by extn. into an org. phase wher ...

(Inotech A.-G., Switz.).2000

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