Intramolecular [2+2] cycloaddition of γ,δ-unsaturated ketenes derived from hex-5-enoyl chloride derivatives gave bicyclo[2.1.1]hexan-5-ones with complete regioselectivity.

Analysis of a panel of 116 Listeria monocytogenes strains of diverse serotypes and sources (clinical, environment of food processing plants, and food) revealed that all but one of the 71 benzalkonium chloride-resistant (BC(r)) isolates harbored bcrABC, previously identified on a large plasmid (pLM80) of the 1998-1999 hot dog outbreak strain H7858. In contrast, bcrABC was not detected among BC-s...

Induction of the MexCD-OprJ multidrug efflux pump was investigated in wild-type Pseudomonas aeruginosa PAO1. MexCD-OprJ was induced by clinically important disinfectants such as benzalkonium chloride and chlorhexidine gluconate, and by some cytotoxic agents such as tetraphenylphosphonium chloride, ethidium bromide and rhodamine 6G. MexCD-OprJ was not induced by norfloxacin, tetracycline, chlora...

MIC-tests in replicate were performed on 286 Salmonella isolates (269 from Danish poultry, including 256 from broiler houses, and 17 from England, mainly from poultry) against five disinfectants used in the poultry industry (glutaraldehyde/benzalkonium chloride compound, formaldehyde, oxidising compound, tar oil phenol, iodophor). Generally, the small variations in MIC could not be associated w...

The purpose of this study was to establish the effects of ultrasonic treatment of eggs on egg weight loss, hatchability, tibia mineral content, chick performance, and eggshell microbial activity. A total of 600 fresh eggs was randomly divided into 5 groups. Treatments were no ultrasound, 35 kHz for 5 min, 35 kHz for 10 min, 35 kHz for 15 min, and eggs sprayed with benzalkonium chloride solution...

A mixture of benzalkonium chloride, Triton X100, and citric acid (Resiguard F) had a marked virucidal effect on lipid-containing deoxyribonucleic and ribonucleic acid viruses, such as vaccinia virus, herpesvirus, and influenza virus. Adenoviruses and picornaviruses were more resistant to inactivation. Electron microscopy showed that influenza particles became aggregated in the presence of Resig...

studying the interaction of pharmaceutical ionic liquids with human serum albumin (hsa) can help investigating whether or not ionic liquid formation can enhance pharmacological profile of the discrete ingredients. in this respect, in the present work, the interactions of benzalkonium ibuprofenate, as a well-known active pharmaceutical ionic liquid, benzalkonium chloride, and also sodium ibuprof...

The purpose of this study was to determine the Minimum Inhibitory Concentration (MIC) of pure or mixed chemicals for Saccharomyces cerevisiae and Lactobacillus fermentum in the samples isolated from distilleries with serious bacterial contamination problems. The biocides, which showed the best results were: 3,4,4’ trichlorocarbanilide (TCC), tested at pH 4.0 (MIC = 3.12 mg/l), TCC with benzetho...

This paper describes a simple and convenient method to measure the concentration and time response function f (C,t) of cells exposed to a toxicant by electric cell-substrate impedance sensing. Attachment and spreading of fibroblastic V79 cells cultured on small gold electrodes precoated with fibronectin were detected as electrical resistance changes. With this method, chemical cytotoxicity was ...

Medical-grade polyvinyl chloride was surface modified by a multistep physicochemical approach to improve bacterial adhesion prevention properties. This was fulfilled via surface activation by diffuse coplanar surface barrier discharge plasma followed by radical graft copolymerization of acrylic acid through surface-initiated pathway to render a structured high density brush. Three known antibac...