A microemulsion electrokinetic chromatography (MEEKC) method has been developed for the determination of four nitrofuran antibiotics (furazolidone (FZD), furaltadone (FTD), nitrofurazone (NFZ) and nitrofurantoin (NFT)) in turbot fish. The effect of buffer the pH, the concentration of SDS and the concentrations of octane and butan-1-ol were studied systematically. With the optimized experimental conditions (octane, 0.82% (w/w); SDS, 3.48% (w/w); butan-1-ol, 6.48% (w/w); and 10 mM sodium tetraborate buffer (pH 9.70), with 30 kV as the applied voltage) all four analytes were baseline-separated within 8 min. Regression equations revealed a good linear relationship between the peak area of each compound and its concentration. The correlation coefficients of the four analytes were from 0.9945 to 0.9999. The relative standard deviations of the migration times and the peak areas were <1.84 and 5.16% (intra-day). The obtained recovery ranged between 97 and 104%. Moreover, the method was successfully validated and applied to the determination of nitrofuran antibiotics in contaminated fish.
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http://dx.doi.org/10.2116/analsci.25.861 | DOI Listing |
Luminescence
January 2025
Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.
The environmental impact of chemicals used in aquaculture, particularly nitrofurantoin, has raised global concern. Nitrofurantoin, a broad-spectrum antimicrobial, is commonly used in aquaculture despite safety risks. Determination of nitrofurantoin in water samples of fish ponds is necessary to ensure the safety and quality of seafood.
View Article and Find Full Text PDFFront Microbiol
January 2025
College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China.
is an opportunistic pathogen that can infect humans, animals and aquatic species, which is widely distributed in different aquatic environments and products. In recent years, with the rapid expansion of intensive aquaculture, the disease caused by has occurred. This study aims to understand the pathogenic characteristics of and provide scientific basis for the prevention and control of the epidemic.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Medical Chemistry, Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russia.
The use of the concept of privileged structures significantly accelerates the search for new leads and their optimization. 6-(methylsulfonyl)-8-(4-methyl-4-1,2,4-triazol-3-yl)-2-(5-nitro-2-furoyl)-2,6-diazaspiro[3.4]octane has been identified as a lead, with MICs of 0.
View Article and Find Full Text PDFInorg Chem
January 2025
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China.
Porphyrins bearing the unique 18π electron tetrapyrrolic macrocycles exhibit interesting photophysical and photochemical properties and have been considered as promising ligands for the construction of functionalized metal-organic frameworks (MOFs). The combination of porphyrin-type ligands with lanthanide metals featured with diverse coordination environments to realize the novel functions as well as the diversity of the MOF is thus attractive but challenging. Herein, an unprecedented porphyrin-based samarium MOF (Sm-BCPP) composed of a 5,10-bis(4-carboxyphenyl)-10,20-diphenyl porphyrin (HBCPP) ligand and samarium-formed one-dimensional clusters has been constructed via a solvothermal approach, and the synthesized Sm-BCPP has excellent chemical stabilities, exhibiting red luminescence.
View Article and Find Full Text PDFActa Parasitol
January 2025
Edificio D, Facultad de Ciencias Químicas, LADISER Inmunología y Biología Molecular, Universidad Veracruzana, Orizaba, Veracruz, México.
Despite being the most relevant and critical option for managing Chagas disease, pharmacological therapy is currently limited by the availability of only two drugs, benznidazole and nifurtimox. Their effectiveness is further restricted in the chronic phase of the infection, as they induce severe side effects and require prolonged treatment. Additionally, the use of these drugs can lead to the emergence of substantial resistance problems, compounded by the potential natural resistance of some parasite isolates.
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