Bacteriocin Antagonistic Potentials of Lactococcus cremoris and Lactococcus lactis Isolates from Different Habitats.

It has not been extensively examined if the ecological role of lactic acid bacterial bacteriocins may affect their distribution in different habitats and thereby impact screenings for novel variants. Further, the functionality of such variants requires additional investigation. This study investigated the distribution of bacteriocin biosynthetic gene clusters (BGCs) and bacteriocinogenic activity of Lactococcus cremoris and Lactococcus lactis from a range of different environments.

Forssman and the staphylococcal hemolysins.

Forssman was a Swedish pathologist and microbiologist who, in the 1920s and 1930s conducted a long series of experiments that led to unique insights into surface antigens of blood cells, as well as added to the discrimination of toxins produced by staphylococci that lyse red blood cells. This review takes offset in the studies published by Forssman in APMIS addressing the hemolytic properties of staphylococcal toxins displayed against erythrocytes of animal and human origin. In light of current knowledge, we will discuss the insights we now have and how they may pave the way for curing infections with pathogenic staphylococci, including Staphylococcus aureus.

Microbiological and decomposition analysis of mass mink burial sites during the COVID-19 pandemic.

In 2020, Denmark buried approximately four million culled, farmed mink in mass graves treated with slaked lime due to widespread SARS-CoV-2 infections. After six months, environmental concerns prompted the exhumation of these cadavers. Our analysis encompassed visual inspections, soil pH measurements, and gas emission assessments of the grave environment.

X-ray transmission imaging of waste printed circuit boards for value estimation in recycling using machine learning.

The growing amount of electronic waste is a global challenge: on one hand, it poses a threat to the environment as it may contain toxic or hazardous substances, on the other hand it is a valuable 'urban mine' containing metals like gold and copper. Thus, recycling of electronic waste is not only a measure to reduce environmental pollution but also economically reasonable as prices for raw materials are rising. Within electronic waste, printed circuit boards (PCBs) occupy a prominent position, as they contain most of the valuable material.