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QuEChERS methodology and Gas Chromatography-mass spectrometry for detection of 345 pesticide residues in Egyptian poultry feed: a comprehensive study.
J Environ Sci Health B
December 2024
Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt.
Animal feed significantly influences the content and quality of animal products consumed by humans and plays a crucial role in the food chain. To simultaneously analyze 345 pesticide residues in poultry feed, a modified Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method was developed, utilizing gas chromatography-tandem mass spectrometry (GC-MS/MS). Validation studies were conducted with spiked pesticide standards, and commercial poultry feed samples were analyzed.
View Article and Find Full Text PDFStrip biosensors based on broad-spectrum aptamers and cationic polymers for the on-site rapid detection of tetracycline antibiotics residues in milk.
Food Chem
February 2025
School of Agricultural Engineering and Food Science, Shandong University of Technology, No. 266 Xincun Xilu, Zibo, Shandong 255049, China.
A lateral flow chromatography strip (LFS) is a chromatography-based biosensor with advantages of convenient portability, simple operation and rapid detection. In this study, a novel rapid detection technique of aptamer-based chromatography strip was developed and used for the first time for the residue detection of tetracycline antibiotics (TCs) in various milk samples. In this method, gold nanoparticles (AuNPs) modified by TCs specific aptamers were used as probes, and cationic polymers as capture molecules in a test line (T-line).
View Article and Find Full Text PDFValidation of a global method for the simultaneous analysis of polar and non-polar pesticides by online extraction and LC-MS/MS.
Anal Chim Acta
November 2024
Department of Chemistry, Università di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy.
Article Synopsis
- Multi-residue methods for pesticide analysis often exclude polar compounds like glyphosate, requiring complex techniques for their detection in food samples, such as specialized chromatography.
- A new method was developed for analyzing polar pesticides in beer, utilizing an online trapping device that combines reversed-phase and ion exchange properties, enabling effective extraction and separation.
- Validation of this method demonstrated recoveries of 71-112% and detection limits competitive with existing polar pesticide analysis methods, confirming its efficacy for large-scale beer testing.
Method development, multi-residue determination, and dietary exposure risk assessment of plant growth regulators in homologous materials of medicine and food.
Environ Monit Assess
October 2024
Physical and Chemical Analysis Department, Fujian Provincial Center For Disease Control and Prevention,Fujian Provincial Key Laboratory of Zoonosis Research, 386 Chongan Road, Fujian, Fuzhou, 350012, China.
Residues of plant growth regulators (PGRs) in homologous materials of medicine and food threaten public health. This study aimed to develop a rapid, sensitive, and high-throughput method for simultaneously determining 16 PGR residues in homologous materials of medicine and food. Furthermore, the established method was applied to actual samples to assess the potential exposure risk of multi-PGR residues.
View Article and Find Full Text PDFDevelopment of an advanced analytical technique for detecting multiple pesticide residues in vegetables through liquid chromatography tandem mass spectroscopy (LC-MS/MS).
J Environ Sci Health B
October 2024
ICAR-Indian Institute of Vegetable Research, Varanasi, India.
A comprehensive LC-MS/MS method, which employs Positive Electrospray Ionization (PEI) and Multiple Reaction Monitoring (MRM) was developed for the simultaneous determination of 35 pesticides belonging to various chemical classes in tomato, brinjal, chili, and okra samples. Extraction was facilitated using a modified QuEChERS method, which allows efficient sample analysis in a single run. Calibration curves for each pesticide exhibited linearity within the concentration range of 0.
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