PYRROLIZIDINE ALKALOIDS: THE BOTANICAL ORIGIN OF POLLEN COLLECTED DURING THE FLOWERING PERIOD OF ECHIUM VULGARE AND THE STABILITY OF PYRROLIZIDINE ALKALOIDS IN BEE BREAD

Previous studies have shown that pollen products sold as nutritional supplements and used in apitherapy may contain toxic pyrrolizidine alkaloids (PAs) if bees collect pollen from PA-containing plants, such as Echium vulgare.In this study, the botanical origin of pollen from two observation sites was studied.Despite a high PA content in pollen samp

Demand for beef produced from pasture-based diets is rising as it is perceived to be healthier, animal friendly and good for the environment.Animals reared on a solely grass forage diet, however, have a lower growth rate than Refrigerated Beverage Dispensers cereal-fed animals and consequently are slaughtered at an older age.This study focused on t

Carbon fiber-reinforced silicon carbide (C/SiC) composites were well-established light weight materials combining high specific strength and damage tolerance.For high-temperature 30" Convection Wall Oven applications, protective coatings had to provide oxidation and corrosion resistance.The literature data introduced various technologies and materi

We have shown that when sharply focusing a linearly polarized optical vortex with topological charge 2, in the near-axis region of the focal plane, not only does a reverse energy Kitchen Cutlery flow (the negative on-axis projection of the Poynting vector) occur, but also the right-handed circular polariza-tion of light.Moreover, due to spin-orbita