Asbestos-vinyl tile floor panels were mopped with three types of chemical disinfectant product, as well as after contact, with the untreated control panel were prepared according to the manufacturer's label instructions. Similar floor panels were inoculated artificially with Staphylococcus aureus. RODAC (replicate organism detection and counting) surface sampling plates were pressed to the disinfectant-treated panels or to the untreated control panel and then immediately pressed to sampling sites on the artificially inoculated floor panels. Plate counts were determined after contact with panels treated with each type of disinfectant, product, as well as after contact with the untreated control panel. Results indicate that disinfectant residues on environmental surfaces do not alter the average plate counts obtained by RODAC samplings.
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http://dx.doi.org/10.1128/aem.32.1.80-84.1976 | DOI Listing |
Sci Total Environ
January 2025
Technical University of Denmark, DTU Sustain, Bygningstorvet, Building 115, 2800 Kg. Lyngby T. Pérez Guillemette, Denmark. Electronic address:
Recirculating showers save up to 70-80 % of the water and energy use of conventional showers, but water quality in these systems are not studied very well due to the technology's early stages. The aim of this study was to provide an overview of information available on which microorganisms were investigated and at which densities. Based on this platform we further aimed at identifying key microbial indicators and pathogens for monitoring water quality in these systems by integrating data from the top five waterborne outbreaks with findings from studies on (1) microbial investigations in reuse projects involving shower effluents or combined bathroom streams, (2) shower water effluents, and (3) biofilms in conventional showers.
View Article and Find Full Text PDFFront Immunol
January 2025
Department of Otorhinolaryngology, Head and Neck surgery, University Hospital Leipzig, Leipzig, Germany.
Background: Adding pembrolizumab, an anti-PD-1 antibody approved for treatment of head and neck squamous cell carcinoma (HNSCC) to neoadjuvant (induction-) chemotherapy utilizing docetaxel and cisplatin (TP) followed by radiotherapy may improve outcome in larynx organ-preservation (LOP) that is investigated in the European Larynx-Organ preservation Study (ELOS). As biomarkers for response to TP and pembrolizumab +TP are missing but may include cytokines, this work aims on determining cytokines potentially linked to outcome as prognostic markers sufficient to predict and/or monitor response to successful LOP.
Methods: Collagenase IV digests were generated from 47 histopathological confirmed HNSCC tumor samples and seeded in 96-well plates containing pembrolizumab, docetaxel, cisplatin either solely or in binary or ternary combination.
J Microbiol Methods
January 2025
National Food Institute, Technical University of Denmark, Henrik Dams Allé, 2800 Kgs. Lyngby, Denmark. Electronic address:
In the food industry, time-to-result is crucial for faster release of products, minimising recalls, mitigation of microbial contamination problems and, ultimately, food safety. Carrageenan is isolated from red seaweed (Rhodophyta) and applied in various foods and beverages as a gelling, thickening, texturing, or stabilizing agent due to its hygroscopic properties. Currently, the standard industry plate count method entails a one-hundred-fold dilution of the sample before mixing with molten agar for assessment of the level of microbial contamination in carrageenan samples prior to business-to-business shipment.
View Article and Find Full Text PDFPlant Dis
January 2025
Zhejiang Academy of Agricultural Sciences, Institute of Agro-product Safety and Nutrition, Hangzhou, Zhejiang, China;
Chinese yam ( Turcz.), known for its nutrient-rich underground tubers, is both a food source and a traditional Chinese medicinal plant. It offers significant nutritional and medicinal benefits.
View Article and Find Full Text PDFEnviron Pollut
January 2025
Civil and Construction Engineering and Environmental and Ecological Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana, United States 47907. Electronic address:
This study evaluated microbial fitness under selective pressure of various erythromycin concentrations and the development of resistance genes in Escherichia coli (E. coli) and Enterococcus faecalis (E. faecalis).
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