Results 61 to 70 of about 33,609 (216)

Determination of benzimidazole residues and their metabolites in raw milk using high performance liquid chromatography-diode array detection

Mljekarstvo, 2017
A new analytical method using high performance liquid chromatography-diode array detector (HPLC-DAD) was developed for the analysis of 18 benzimidazoles and their metabolites in milk.
Marija Denžić Lugomer, Damir Pavliček, Nina Bilandžić, Darko Majnarić   +3 more
doaj   +1 more source

Supercritical Fluid Chromatography for Expedited Sample Clean‐Up in Isotope Ratio Mass Spectrometry Including Cholesterol as New Endogenous Reference Compound

Drug Testing and Analysis, EarlyView.
Supercritical fluid chromatography was employed in the sample preparation for IRMS determinations in sports drug testing for the first time and the developed method was successfully validated. Cholesterol (CHOL) was introduced as a novel endogenous reference compound and population‐based Δ‐values were established as shown here.
Thomas Piper, Jana Drewes, Mario Thevis
wiley   +1 more source

Detection, Isolation and Characterization of Principal Synthetic Route Indicative Impurity in Lansoprazole

E-Journal of Chemistry, 2010
An unknown impurity in lansoprazole (2-[[[3-methyl-4-(2, 2, 2-trifluoroethoxy)-2-pyridyl] methyl] sulfinyl] benzimidazole) was detected by HPLC and was identified as des-(trifluoroethoxy) lansoprazole, an principal synthetic route indicative impurity of ...
K. S. V Srinivas, K. Mukkanti, R. Buchi Reddy, P. Srinivasulu   +3 more
doaj   +1 more source

Toxicokinetic Study of a Gastroprotective Dose of Capsaicin by HPLC-FLD Method

Molecules, 2019
Background: A low dose of capsaicin and its natural homologs and analogs (capsaicinoids) have shown to prevent development of gastric mucosal damage of alcohol and non-steroid anti-inflammatory drugs.
Mónika Kuzma, Krisztina Fodor, Attila Almási, Gyula Mózsik, Tibor Past, Pál Perjési   +5 more
doaj   +1 more source

Estimating Illicit Stimulant Drug Consumption in Luxembourg Using Wastewater‐Based Epidemiology

Drug Testing and Analysis, EarlyView.
Wastewater‐based epidemiology provided nationwide estimates of illicit stimulant consumption in Luxembourg, revealing higher urban use, weekend increases in cocaine and MDMA, and cocaine as the dominant stimulant. The approach offers an objective complement to conventional drug surveillance for informing public health and policy.
Nadine Berndt, Luca Wiltgen, Nicolas Villani, Georges Dahm, Karin Roschel, Serge Schneider   +5 more
wiley   +1 more source

A Single‐Aliquot Strategy for Simultaneous Carbon Isotope Confirmation of 6‐Oxo‐Androstenedione and Testosterone Misuse in Doping Control

Drug Testing and Analysis, EarlyView.
This method enables simultaneous carbon isotope confirmation of 6‐oxo‐androstenedione and testosterone markers from a single urine aliquot, using bench‐top extraction, two preparative HPLC steps with intermediate acetylation, and GC/C/IRMS analysis. It was fully validated according to WADA requirements, and real samples demonstrated its fitness for ...
Fábio Azamor de Oliveira, Cristiane Abrantes da Silva, Carolina dos Reis Farias, Mariana Trad Rosner da Motta, Thais Reis da Silva, Natasha Veiga Louzada, Monica Costa Padilha, Henrique Marcelo Gualberto Pereira   +7 more
wiley   +1 more source

Determination of Aflatoxins and Selected Heavy Metals in Rice Varieties Cultivated in Fogera, Amhara Region, Ethiopia

Food Chemistry International, EarlyView.
ABSTRACT Rice (Oryza sativa L.) is a vital staple crop for nearly half the world's population. This study investigates the levels of aflatoxins (AFB1, AFB2, AFG1, and AFG2) and selected heavy metals (Cd, Pb, and Cr) and essential elements (Mn, Fe, Mg, Cu, and Zn) in rice varieties cultivated in Fogera, Amhara Region, Ethiopia.
Melese Tilahun, Bisratewongel Tegegne, Nibret Mekonen, Agegnehu Alemu   +3 more
wiley   +1 more source

Food Contamination and Safety in Nigeria: A Systematic Synthesis of Heavy Metals, Microbial Pathogens, and Health Risk Metrics

Food Safety and Health, EarlyView.
This is an infographic driver of food contaminants and health effects. ABSTRACT Food safety remains a critical challenge in Nigeria due to rapid urbanization and weak regulatory enforcement. This systematic review synthesizes empirical evidence from 2015 to 2025 to characterize food contaminant profiles and associated human health risks in Nigeria ...
Cecilia Nwadiuto Obasi, Naomi A. Mogborukor, Baridoo Donatus Dooka, Polycarp Dauda Madaki, Chiara Frazzoli, Mohamed Haddad, Orish Ebere Orisakwe   +6 more
wiley   +1 more source

Extraction and HPLC analysis of Caffeic Acid Phenethyl Ester (CAPE) from propolis and honey samples collected from different regions of Turkiye

Journal of Pharmaceutical and Biomedical Analysis Open
Caffeic acid phenethyl ester (CAPE), a key bioactive component of propolis, is recognized for its wide-ranging therapeutic properties. In this study, a robust and sensitive high-performance liquid chromatography (HPLC) method was developed and validated ...
Mariem Bouali, Mehmet Fatih Cengiz, Ozgur Dandin   +2 more
doaj   +1 more source

Monitoring and Mitigation Strategies for Hazardous Compounds in Chinese Rice Wine (Huangjiu): A Comprehensive Review

Food Safety and Health, EarlyView.
This review elucidates the formation pathways and detection technologies for ethyl carbamate, biogenic amines, and higher alcohols in Huangjiu. It concludes that integrated control frameworks are essential to decouple safety risks from the metabolic processes responsible for flavor development.
Lulu Liu, Zhiqiang Kong, Lin Li, Yifan Zhang, Bei Fan, Minmin Li   +5 more
wiley   +1 more source