Results 1 to 10 of about 448,504 (204)

Quaternary ammonium compounds in hypersensitivity reactions [PDF]

Frontiers in Toxicology, 2022
Quaternary ammonium compounds (QAC) are commonly used disinfectants, antiseptics, preservatives, and detergents due to their antibacterial property and represent the first used biocides before phenolic or nitrogen products.
Marine Peyneau, Marine Peyneau, Luc de Chaisemartin, Luc de Chaisemartin, Nicolas Gigant, Sylvie Chollet-Martin, Sylvie Chollet-Martin, Saadia Kerdine-Römer   +7 more
doaj   +5 more sources

Leaves play a central role in the adaptation of nitrogen and sulfur metabolism to ammonium nutrition in oilseed rape (Brassica napus) [PDF]

BMC Plant Biology, 2017
Background The coordination between nitrogen (N) and sulfur (S) assimilation is required to suitably provide plants with organic compounds essential for their development and growth.
Inmaculada Coleto, Marlon de la Peña, Jon Rodríguez-Escalante, Iraide Bejarano, Gaëtan Glauser, Pedro M. Aparicio-Tejo, M. Begoña González-Moro, Daniel Marino   +7 more
doaj   +9 more sources

Adaptation mechanisms of Listeria monocytogenes to quaternary ammonium compounds [PDF]

Microbiology Spectrum, 2023
Listeria monocytogenes is ubiquitously found in nature and can easily enter food-processing facilities due to contaminations of raw materials.
Lisa Maria Schulz, Fabienne Dreier, Lisa Marie de Sousa Miranda, Jeanine Rismondo   +3 more
doaj   +2 more sources

Food and bile micelle binding of quaternary ammonium compounds [PDF]

ADMET and DMPK, 2023
Background and Purpose: Physiologically-based biopharmaceutics modeling (PBBM) has been widely used to predict the oral absorption of drugs. However, the prediction of food effects on oral drug absorption is still challenging, especially for negative ...
Sumiji Takeru, Kiyohiko Sugano
doaj   +2 more sources

Quaternary ammonium compounds – New occupational hazards

Medycyna Pracy, 2014
Quaternary ammonium compounds (QACs, quats) belong to organic ionic chemical agents which display unique properties of both surfactants and disinfectants.
Agnieszka Lipińska-Ojrzanowska, Jolanta Walusiak-Skorupa   +1 more
doaj   +3 more sources

Resorcinol-based Bolaamphiphilic Quaternary Ammonium Compounds. [PDF]

ChemMedChem
AbstractQuaternary ammonium compounds (QACs) play crucial disinfectant roles in healthcare, industry, and domestic settings. Most commercially utilized QACs like benzalkonium chloride have a common architectural theme, leading to a rise in bacterial resistance and urgent need for novel structural classes.
Asante JYD, Casey CM, Bezold EL, Fernando A, McDonough D, Wuest WM, Minbiole KPC.   +6 more
europepmc   +3 more sources

Imidazoles and Quaternary Ammonium Compounds as Effective Therapies against (Multidrug-Resistant) Bacterial Wound Infections [PDF]

Antibiotics
Background/Objectives: The rise and spread of antimicrobial resistance complicates the treatment of bacterial wound pathogens, further increasing the need for newer, effective therapies.
Lauren Van de Vliet, Thijs Vackier, Karin Thevissen, David Decoster, Hans P. Steenackers   +4 more
doaj   +2 more sources

Quaternary Ammonium Compounds as Candidate Photoprotective Compounds in Reef-Building Corals

Frontiers in Marine Science, 2022
Quaternary ammonium compounds (QACs) – e.g., betaines – have a chemical structure related to that of the tertiary sulfonium compounds (TSCs) – e.g., dimethylsulfoniopropionate – explaining why these two classes of coral metabolites are often studied and ...
Richard W. Hill
doaj   +1 more source

Assessment of ammonium fluoride as a mobile phase additive for sensitivity gains in electrospray ionization

Analytical Science Advances, 2023
Ammonium fluoride has been shown to improve sensitivity when using electrospray ionization (ESI) coupled with mass spectrometry (MS). Recent internal investigation furthered that claim, through the observation of improved sensitivity when analyzing ...
Jeremy Ryan McFadden, David Michael Ames
doaj   +1 more source

Synthesis of a Metal Oxide by Forming Solvate Eutectic Mixtures and Study of Their Synthetic Performance under Hyper- and Hypo-Eutectic Conditions

Crystals, 2020
The synthesis of YBa2Cu3O7−x (YBCO or 123) superconductor was carried out under hyper- and hypo-eutectic conditions with different ammonium compounds, i.e., ammonium nitrate, formate, acetate, carbonate, bicarbonate, and tetramethylammonium nitrate.
Omar Gómez Rojas, Simon R. Hall, Tadachika Nakayama   +2 more
doaj   +1 more source