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Microplastics in Cuban freshwaters: diversity, temporal changes, and effects on extracellular enzymatic activity.
Environ Pollut
January 2025
Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona Km. 33.600, 28871, Alcalá de Henares, Madrid, Spain.
Plastics, as synthetic polymers, are emerging contaminants that can harm organisms and ecosystems. This study investigates the presence of microplastics in sediments of two rivers in western Cuba, assessing their temporal variability, diversity, and characterizing the types of microplastics in these ecosystems. Additionally, the study examines the relationship between microplastic concentrations, the extracellular enzymatic activity of benthic microbial communities, and nutrient levels in sediments.
View Article and Find Full Text PDFLanthanide-controlled protein switches: development and in vitro and in vivo applications.
Angew Chem Int Ed Engl
January 2025
Queensland University of Technology - QUT: Queensland University of Technology, School of Biology and Environmental Science, AUSTRALIA.
Lanthanides, which are part of the rare earth elements group have numerous applications in electronics, medicine and energy storage. However, our ability to extract them is not meeting the rapidly increasing demand. The discovery of the bacterial periplasmic lanthanide-binding protein lanmodulin spurred significant interest in developing biotechnological routes for lanthanide detection and extraction.
View Article and Find Full Text PDFVO microcubes as an alternative to peroxidase/TMB for colorimetric detection of HO: Development of glucose sensing method.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Chemistry, University of Kurdistan, Sanandaj 66177-15175 Iran; Research Center for Nanotechnology, University of Kurdistan, Sanandaj 66177-15175 Iran. Electronic address:
The study focuses on the synthesis of VO microcubes for the non-enzymatic colorimetric determination of HO.Vanadium oxide nanostructures are known for their redox activity and layered structures, making VO a valuable material for sensing applications. The characterization of the prepared sample was done using XPS, XRD, Raman spectroscopy, and SEM techniques.
View Article and Find Full Text PDFFabrication of Compartmentalized Multienzyme Reactor for Colorimetric Biosensing of Glucose and Phenol with High Sensitivity.
ACS Appl Mater Interfaces
January 2025
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China.
Enzymatic cascade reactions are widely utilized in food security, environmental monitoring, and disease diagnostics, whereas their practical application was hindered due to their limited catalytic efficiency and intrinsic fragility to environmental influences. Herein, a compartmentalized dual-enzyme cascade nanoreactor was constructed in metal-organic frameworks (ZIF-8) by a shell-by-shell growth method. ZIF-8 provided a good microenvironment to maintain the activity of enzymes and protected them against harsh conditions.
View Article and Find Full Text PDFIntramolecular distance-regulated G4 DNA enzymatic activity-based chromophotometric system for visual monitoring of diquat.
Anal Chim Acta
January 2025
Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China. Electronic address:
Background: As global food production continues to surge, the widespread use of herbicides has also increased concurrently, posing challenges like health risks and environmental pollution. Traditional detection methods for pesticide residues, such as diquat (DQ), were hampered by limitations like high expenses, lengthy detection times and complex operations, restricting their practical application in rapid clinical diagnosis.
Results: In light of the pressing necessity for the identification of minute pesticide residues and the intrinsic constraints of small molecule analysis, a novel chromophotometric biosensor targeting small molecules was developed based on bi-epitopes on single antibody to immobilize two DQ-PAL, inhibiting the hybridization of DQ-PAL.
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