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Fluorescence Probe for Detection of Malathion Using Sulfur Quantum Dots@Graphitic-Carbon Nitride Nanocomposite.
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BioNanocomposite Research Center, Department of Food and Nutrition, Kyung Hee University, Seoul, Republic of Korea.
A novel fluorescence-based sensor has been developed for the sensitive detection of malathion, an organophosphorus pesticide, using sulfur-doped quantum dots (SQDs) embedded within graphitic carbon nitride (g-C₃N₄) nanosheets. The SQDs were synthesized through a hydrothermal method, whereas the g-C₃N₄ nanosheets were produced via an exfoliation process. The resulting SQDs@g-C₃N₄ nanocomposite demonstrated outstanding performance for malathion detection in food samples, exhibiting a wide linear detection range of 10-120 μM and an exceptionally low detection limit of 0.
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School of Medicine, Foshan University, Foshan, Guangdong, 528000, China.
Natural antimicrobial peptides (AMPs) are promising candidates for the development of a new generation of antimicrobials to combat antibiotic-resistant pathogens. They have found extensive applications in the fields of medicine, food, and agriculture. However, efficiently screening AMPs from natural sources poses several challenges, including low efficiency and high antibiotic resistance.
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Biol Methods Protoc
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School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, P.R. China.
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Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.
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Center of Clinical Laboratory Medicine, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, Jiangsu, China.
The incidence of cervical cancer continues to rise in underdeveloped regions due to low human papillomavirus (HPV) vaccination rates and inadequate screening systems. To achieve convenient, rapid, and accurate detection of HPV, we developed a three-wire lateral flow strip assay system based on dual-OR logic gates for rapid and simultaneous detection of HPV subtypes 16 and 18 in a single test. The system combines three-branch-catalytic hairpin assembly (TCHA)-mediated signal amplification with simple OR logic gate-based signal output to improve detection rates while enabling HPV 16/18 subtype identification.
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