Daniel R. Schmid,1 Sergey Smirnov,2 Magdalena Margańska,2 Alois Dirnaichner,1,2 Peter L. Stiller,1 Milena Grifoni,2 Andreas K. Hüttel,1,* and Christoph Strunk1,† 1Institute for Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany 2Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany (Received 1 August 2014; revised manuscript re...

Abstract Conversion of lignocellulosic biomass into bioethanol is essential to reduce dependency on fossil fuels. After the grass pea and wild oat straws were characterized, they hydrolyzed by live fungi (in situ), crude fungal enzymes, chemical methods (sodium hydroxide sulphuric acids at 0.5, 1, 2, 3%). The used for in situ degradation enzymes Aspergillus niger JMC22344, Trichoderma reesei JM...

Microbial bioconversion studies conducted on the diterpene psiadin have revealed that it was metabolized by Aspergillus niger (NRRL 2295) to give 2alpha-hydroxydeoxopsiadin, Cunninghamella blakesleeana (ATCC 8688a) to give 11beta-hydroxypsiadin, and Cylindrocephalum aureum (ATCC 12720), Gongronella butleri (ATCC 22822), Kloeckera africana (ATCC 20111), and Kluyveromyces marxianus var. lactis (A...

Under proper operating conditions, a low dead volume continuous filtration module operated on biological broths (yeast and bacteria suspensions in stirred reactors) still fulfills the flow-rate requirements of an analytical apparatus (for example HPLC or FIA) without membrane regeneration. The filtrate stream has been successfully connected to a bioreactor in order to perform the automated HPLC...

A new method for determination of the optimum temperature and activation energies based on an idea of the average rate of enzymatic reaction has been developed. A mathematical model describing the effect of temperature on a dimensionless activity for enzyme deactivation following the first-order kinetics has been derived. The necessary condition for existence of the function extreme of the opti...

Ethanol stimulated the leakage of amino acids and 260-nm-light-absorbing compounds from cells of Saccharomyces cerevisiae. The efflux followed first-order kinetics over an initial period. In the presence of lethal concentrations of ethanol, the efflux rates at 30 and 36 degrees C were an exponential function of ethanol concentration: k(e) = k(e)e, where k(e) and k(e) are the efflux rate constan...