Wolfgang Fritsche

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 A miniscale screening system was developed to detect depolymerizing activities of fungi toward low-rank coals. This system was suitable for the determination of changes in molecular masses as well as for the measurement of the enzymes responsible. A total of 486 fungal strains of different ecophysiological and taxonomic groups were tested for their ability(More)
The degradation of polycyclic aromatic hydrocarbons by a manganese peroxidase crude preparation of Nematoloma forwardii was demonstrated for a mixture of eight different polycyclic aromatic hydrocarbons, and the five individual polycyclic aromatic hydrocarbons phenanthrene, anthracene, pyrene, fluoranthene, and benzo[alpha]pyrene. Oxidation of polycyclic(More)
Trametes versicolor was shown to produce extracellular laccase during surface cultivation on glucose, wheat straw and beech wood. Growth on both wheat straw and beech wood led to an increase as high as 3.5-fold in extracellular laccase activity, in comparison with growth on glucose. The corresponding yields in fungal biomass reached only about 20% of the(More)
Resting phenol-grown mycelia of the fungus Penicillium frequentans strain Bi 7/2 were shown to be capable of metabolizing various monohalogenated phenols as well as 3,4-dichlorophenol. 2,4.dichlorophenol could be metabolized in the presence of phenol as cosubstrate. In the first degradation step the halogenated phenols were oxidized to the corresponding(More)
Manganese peroxidase (MnP) from the ligninolytic basidiomycetes Phlebia radiata and Nematoloma frowardii was found to decompose malonate oxidatively in the absence of H2O2 in a reaction system consisting of the enzyme, sodium malonate and MnCl2. The enzymatic oxidation resulted in a substantial decrease in malonate concentration and the formation of CO2,(More)
Two newly isolated aniline-degrading bacterial strains were characterized with regard to their enzyme systems responsible for aniline catabolism. One of them identified as a Rhodococcus sp. metabolized aniline exclusively via the beta-ketoadipate pathway by means of inducible enzymes. The aniline-degrading enzyme system of the second isolate, presumably a(More)
The effects of growing ryegrass (Lolium perenne L.) on the biodegradation of hydrocarbons was studied in laboratory scale soil columns. Degradation of hydrocarbons as well as bacterial numbers, soil respiration rates and soil dehydrogenase activities were determined. In the rhizosphere soil system, aliphatic hydrocarbons disappeared faster than in(More)
Deploying appropriate security functionality in satellite networks is often necessary in order to allow their usage for certain sensitive scenarios. However, deploying security over satellite networks has specific issues caused either by the characteristic of the satellite link such as the long end-to-end delay and higher bit error rates, or by some other(More)
Communication facilities for vehicles became more and more important over the last years. Most time this involves the usage of wireless technologies for communication between vehicles, between vehicles and the roadside, as well as between the vehicle and systems reachable via Wide Area Networks (WANs) such as the Internet. This paper discusses how Internet(More)