Studying the effect of oxygen availability and matrix structure on population density and inter-strain interactions of Listeria monocytogenes in different dairy model systems.

Due to the ubiquitous character of Listeria monocytogenes multiple strains of the pathogen may end up co-existing in/on the same final products and could potentially cause infection during consumption. Such multiple strain contamination may occur in different stages of the food supply chain. The present study evaluated the effect of oxygen availability and matrix structure on inter-strain interactions of L.

The C-Domain of Oleuropein -Glucosidase Assists in Protein Folding and Sequesters the Enzyme in Nucleus.

Oleuropein, a terpene-derived glycosylated secoiridoid biosynthesized exclusively by members of the Oleaceae family, is involved in a two-component defense system comprising a β-glucosidase that activates oleuropein into a toxic glutaraldehyde-like structure. Oleuropein and its deglycosylated derivatives have high pharmaceutical interest. In this study we determined that the in planta heterologous expressed OeGLU, an oleuropein-specific β-glucosidase from olive (), had enzymatic kinetics similar to the olive native enzyme.