This paper attempts to review in how far thermodn. anal. can be used to understand and predict the performance of microorganisms with respect to growth and bioproduct synthesis. In the first part, a simple thermodn. model of microbial growth is developed w ...

2006

A novel reactive perstraction system based on liquid-core microcapsules applied to lipase-catalyzed biotransformations

Ian William Marison, Urs von Stockar

A novel reactive perstraction system has been developed based on liq.-core capsules, involving an enzyme-catalyzed reaction coupled with simultaneous in situ product recovery. Lipase-catalyzed reactions, hydrolysis of triprionin and nitrophenyl laurate, we ...

2006

Novel reactive perstraction system applied to the hydrolysis of penicillin G

Ian William Marison, Urs von Stockar

The activity of penicillin acylase has been studied in aq. and org. solvents, as free enzyme as well as immobilized within the membrane of liq.-core capsules. The activity of the enzyme is inhibited by the accumulation of the products of the hydrolysis rea ...

2005

Formation of Microcapsules from Polyelectrolyte and Covalent Interactions

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

A new approach combining electrostatic and covalent bonds was established for the formation of resistant capsules with long-term stability under physiol. conditions. Three kinds of interactions were generated in the same membrane: (1) electrostatic bonds b ...

2005

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