Untersuchung von Weizen sächsischer Herkunft auf Fusarien und die Toxine Deoxynivalenol (DON) und Zearalenon (ZEA)

98 wheet samples harvested in 1998 from three different experimental plots in saxony where investigated on the species of fusarium and the mycotoxins DON, ZEA and nivalenol (NIV). Analysis of DON was done by fast-Elisa-test and HPLC-MS. There was a good correlation between the two methods but a tendency of higher values determined by Elisa. NIV was also determined by HPLC-MS and ZEA by HPLC-fluorescence.     

Nachweis und Lokalisation von Pterinen und Riboflavin in der Haut von Amphibien und Reptilien

Ohne ZusammenfassungGekürzte Wiedergabe einer Dissertation an der Naturwissenschaftlichen Fakultät der Universität München. Herrn Prof. Dr. Karl v. Frisch danke ich für die stete großzügige Hilfe bei dieser Arbeit.     

Die Entstehungsbedingungen von Protonema und Adventivsprossen an Organen und Fragmenten von Bryophyten

Ohne Zusammenfassung     

Einfluss von Fusarientoxinen auf die Mast- und Schlachtleistung von Broilern und Puten

In two broiler and two turkey trials the influence of Fusarium toxins in maize on growth and slaughter performance, on residues of toxins in carcass and litters and blood parameters were investigated. In one broiler and turkey trial with naturally contaminated maize the main contaminants were deoxynivalenol (DON), moniliformin (MON and beauvericin (BEA). In one further broiler and turkey trial with inoculated maize (Fusarium subglutinans) the main contaminants were MON and BEA. The level of contamination of mycotoxins in the diets was free, low, medium and high. For every broiler trial 180 and for the turkey trials 60 and 100 one day old chicken were used. The result of these investigations shows that broiler and turkeys are not very sensitive to Fusarium toxins. Growth and slaughter performance and also blood parameters were not negative influenced by higher mycotoxin dosages in the diets.     

Die Toxine der Cyanobakterien: Neue bioaktive Verbindungen

Cyanobacteria produce numerous bioactive compounds including potent neuro‐ and hepatotoxins. The genes for the biosynthesis of microcystin, a hepatotoxic, cyclic heptapeptide, have been identified. Sequence analysis of these genes revealed that cyanobacteria ossess, like some other bacteria and lower eukaryotes, giant protein complexes consisting of peptide synthetases, olyketide synthases and tayloring enzymes involved in the biosynthesis of nonribosomal peptides and polyketides. Cyanobacteria represent a rich source of modules and domaines for the molecular design of new enzymes for the synthesis of bioactive compounds.     

Verhalten von Eu- und Heterochromatin und interphasisches Kernwachstum beiRhoeo discolor; Vergleich von Mitose und Endomitose

Ohne Zusammenfassung     

Diagnose und Beschreibung von Insekten-virosen

Ohne Zusammenfassung