Introduction: Difenoconazole (DIFE) is a common pesticide used in citrus cultivation; excessive intake can cause neurological damage to the organism, and the existing colloidal gold immunochromatographic test strips cannot meet the requirements for the detection of citrus samples.
Methods: Difenoconazole test strip was prepared based on the colloidal gold immunochromatographic technique (GICT), and its application in citrus samples was investigated; with colloidal gold (CG) as the probe, the optimization of GICT parameters, and the determination of reaction method, the immunochromatographic test strips for the detection of DIFE in citrus was developed, and the limit of detection (LOD), specificity, accuracy, and stability of the test strips were verified.
Results: The results showed that the visual detection limit of the prepared colloidal gold immunochromatographic test strips was 0.2 mg/kg and the quantitative range was 0.06-0.6 mg/kg, and the test strips could specifically identify DIFE and have no cross-reaction with other common triazole pesticides. The detection method established in this study was verified by the GC-MS method, and the detection results achieved good consistency ( > 0.98).
Conclusion: The test strips developed in this study have good performance and can be used for highly sensitive detection of citrus samples.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10999568 | PMC |
| http://dx.doi.org/10.3389/fnut.2024.1341219 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Sensitivity-enhanced competitive lateral flow immunoassays by polycaprolactone electrospun stacking pad: Estrous determination in whole blood.
Biosens Bioelectron
December 2024
Nanobiointeractions&Nanodiagnostics, Istituto Italiano di Tecnologia (IIT), Via Morego, 30, 16163, Genova, Italy. Electronic address:
Lateral flow assays (LFA) are widely adopted in point-of-care diagnostics across a spectrum of applications, due to their simplicity of use and cost-effectiveness. However, in complex biological matrices (e.g.
View Article and Find Full Text PDFDevelopment of a dual-mode lateral flow assay based on structure-guided aptamers for the detection of capsaicin in gutter oils.
Biosens Bioelectron
December 2024
Teaching and Research Office of Food Safety, School of Public Course, Bengbu Medical College, Bengbu, 233000, China. Electronic address:
The construction of structure-guided aptamers and the ultra-sensitive aptamer-based lateral flow assays (Apt-LFA) integrated detection method hold significant potential for food analysis. Using an engineered modified sequence strategy, we successfully developed the aptamer Cap-1-2M4, significantly enhancing its affinity for capsaicin (CAP) to 0.6197 ± 0.
View Article and Find Full Text PDFRapid evaluation of hepatocellular carcinoma by detecting plasma exosomes with time-resolved fluorescence immunochromatographic test strips.
Mikrochim Acta
December 2024
School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China.
Time-resolved fluorescence immunochromatographic test strips (TRFIS) was developed for the rapid detection of hepatocellular carcinoma (HCC)-specific plasma exosomes (hExos) by targeting the hExo-surface membrane protein glypican-3 (GPC3). The GPC3-TRFIS could directly detect plasma exosomes without the isolation and purification process, and the whole immunoassay could be completed within 15 min. The visual detection limit of GPC3-TRFIS was 3.
View Article and Find Full Text PDFPaper-Based Aptasensor Assay for Detection of Food Adulterant Sildenafil.
Biosensors (Basel)
December 2024
Department of Medical Biology, School of Medicine, Atilim University, Ankara 06830, Turkey.
Sildenafil is used to treat erectile dysfunction and pulmonary arterial hypertension but is often illicitly added to energy drinks and chocolates. This study introduces a lateral flow strip test using aptamers specific to sildenafil for detecting its illegal presence in food. The process involved using graphene oxide SELEX to identify high-affinity aptamers, which were then converted into molecular gate structures on mesoporous silica nanoparticles, creating a unique signaling system.
View Article and Find Full Text PDFUltrasensitive Lateral Flow Immunoassay of Fluoroquinolone Antibiotic Gatifloxacin Using Au@Ag Nanoparticles as a Signal-Enhancing Label.
Biosensors (Basel)
December 2024
A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia.
Gatifloxacin (GAT), an antibiotic belonging to the fluoroquinolone (FQ) class, is a toxicant that may contaminate food products. In this study, a method of ultrasensitive immunochromatographic detection of GAT was developed for the first time. An indirect format of the lateral flow immunoassay (LFIA) was performed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!