Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Pretreatment technology suffers from drawbacks such as tedious operation, low efficiency, and poor selectivity. Hence, we presented a singly capped cucurbit[7]uril-mediated magnetic solid phase extraction (Q[7]-MagSPE) combined with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) for multiresidue analysis of 20 pesticides. The Q[7]-MagSPE was constructed by assembling Q[7] onto the gold magnetic nanoparticles (GoldMag) via the reaction between one of the electron-rich carbonyl portals of Q[7] and gold. The host-guest interaction activity of supramolecules, the high dispersibility and easy separability of GoldMag were integrated in the Q[7]-MagSPE. The detection limits for 20 pesticides were lower than 10.3 ng/kg, and the recoveries were 71.55-110.6 %. Moreover, the reusability of the Q[7]-GoldMag and effect of washing times on the pesticide residue were evaluated to be satisfactory. Therefore, the Q[7]-MagSPE provides a rapid and robust pretreatment method for the multiresidue determination of pesticides in vegetables, which is of great significance for food safety.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.foodchem.2025.145688 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Singly capped cucurbit[7]uril-mediated magnetic solid phase extraction coupled with HPLC-MS/MS for the multiresidue analysis of 20 pesticides in vegetables.
Food Chem
November 2025
School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China; Guizhou Key Laboratory of Macrocyclic and Supramolecular Chemistry, Guiyang 550025, China. Electronic address:
Pretreatment technology suffers from drawbacks such as tedious operation, low efficiency, and poor selectivity. Hence, we presented a singly capped cucurbit[7]uril-mediated magnetic solid phase extraction (Q[7]-MagSPE) combined with high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) for multiresidue analysis of 20 pesticides. The Q[7]-MagSPE was constructed by assembling Q[7] onto the gold magnetic nanoparticles (GoldMag) via the reaction between one of the electron-rich carbonyl portals of Q[7] and gold.
View Article and Find Full Text PDFDeep-learning-enhanced exploration of peptide conformational space with high fidelity using hydrogen bond information.
Phys Chem Chem Phys
July 2025
Department of Chemistry, Ajou University, Suwon, 16499, Korea.
Neural network potential models were trained using density functional theory (DFT) data for singly protonated hexapeptide, DYYVVR, previously studied through cryogenic ion spectroscopy and applied for its conformational analysis. A fragmentation-based approach was employed, in which the training datasets included capped dipeptides and capped single-residue clusters. The fragmentation approach effectively reduced energy prediction errors at reduced computational costs.
View Article and Find Full Text PDFMitigation of aluminum toxicity in rice seedlings using biofabricated selenium nanoparticles and nitric oxide: Synergistic effects on oxidative stress tolerance and sulfur metabolism.
Chemosphere
February 2025
Department of Botany, University of Gour Banga, Malda, 732103, West Bengal, India.
Biofabricated selenium nanoparticles (Se-NPs) and sodium nitroprusside-derived nitric oxide (NO) singly or in combination was evaluated to improve tolerance to aluminum (Al) stress in rice (Oryza sativa L. cv. Swarna Sub1).
View Article and Find Full Text PDFOptimization, Validation, and Application of Cleanup-Coupled Liquid Chromatography-Tandem Mass Spectrometry for the Simultaneous Analyses of 35 Mycotoxins and Their Derivatives in Cereals.
Foods
November 2024
Food Analysis Research Center, Korea Food Research Institute, Wanju 55365, Republic of Korea.
Mycotoxins occur singly or as co-contaminants and are primarily present in carbohydrate-rich foods such as cereals and cereal-based products. To effectively monitor mycotoxin co-contamination in cereals and cereal-based products, the simultaneous analysis of mycotoxins and their derivatives is required. Therefore, we coupled cleanup with LC-MS/MS for the rapid and robust quantitation of 35 analytes in wheat samples, including ergot alkaloids (EAs), which are rarely included in such analyses.
View Article and Find Full Text PDFProteasome localization and activity in pig brain and small molecule screening for activators.
Front Cell Neurosci
February 2024
Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
Introduction: Loss of proteasome function, proteinopathy, and proteotoxicity may cause neurodegeneration across the human lifespan in several forms of brain injury and disease. Drugs that activate brain proteasomes could thus have a broad therapeutic impact in neurology.
Methods: Using pigs, a clinically relevant large animal with a functionally compartmental gyrencephalic cerebral cortex, we evaluated the localization and biochemical activity of brain proteasomes and tested the ability of small molecules to activate brain proteasomes.