Dose-response study on the transfer of pyrrolizidine alkaloids from a tansy ragwort extract ( Gaertn.) to bovine milk.

Ragworts like tansy ragwort ( Gaertn., syn. L.

Short-term exposure of dairy cows to pyrrolizidine alkaloids from tansy ragwort ( Gaertn.): effects on organs and indicators of energy metabolism.

Preserved feed from meadows contaminated with ragwort (, Gaertn.) may expose livestock to pyrrolizidine alkaloids (PA). Dairy cows are considered to be very susceptible animals and a PA ingestion can lead to liver and further organ damages and even death.

Short-term exposure of dairy cows to pyrrolizidine alkaloids from tansy ragwort ( Gaertn.): effects on health and performance.

The increasing spread of ragworts is observed with concern. Ragworts like tansy ragwort ( Gaertn.) or marsh ragwort () contain pyrrolizidine alkaloids (PA) which may induce hepatotoxic effects.

Ibuprofen Degradation and Associated Bacterial Communities in Hyporheic Zone Sediments.

Ibuprofen, a non-steroidal anti-inflammatory pain reliever, is among pharmaceutical residues of environmental concern ubiquitously detected in wastewater effluents and receiving rivers. Thus, ibuprofen removal potentials and associated bacteria in the hyporheic zone sediments of an impacted river were investigated. Microbially mediated ibuprofen degradation was determined in oxic sediment microcosms amended with ibuprofen (5, 40, 200, and 400 µM), or ibuprofen and acetate, relative to an un-amended control.