Synthesis of surface protein-imprinted nanoparticles based on metal coordination and anchored carbon dots for enhanced fluorescence detection

Nano-Nutraceuticals for Health: Principles and Applications

“…The potential use of these materials in the food packaging industry was confirmed. Furthermore, Liu and collaborators ( 2022 ) obtained soluble soybean polysaccharide (SSPS)-based nanocomposite films with in situ synthesized AgNPs. These nanocomposite films exhibited excellent antibacterial activity, and heat-sealed pouches made from the nanocomposite films extended the shelf-life of green grapes (Liu et al 2022 ).…”

“…Some works have reported the use of nanomaterials for the microbiological control of harmful species present in food. Liu et al ( 2022 ) developed a fluorescence sensing platform based on the fluorescence resonance energy transfer between upconversion nanoparticles combined with aptamers and black hole quencher 1 (BHQ-1) ligated with cDNA for the detection of pathogenic bacteria. Using this sensing platform, the authors successfully detected one strain of Staphylococcus aureus with a limit of detection (LOD) of 6 CFU/ml in the linear range of 36–3.6 × 10 7 CFU/ml.…”

“…This shows that the same nanomaterials can have their chemical structure optimized and adapted to act more adequately as sensors. For example, carbon quantum dots (CQDs) are versatile fluorescent nanoparticles discovered about 20 years ago, whose surface is rich in functional groups (Xu et al 2004 ; Dsouza et al 2021 ; Liu et al 2022 ). Some authors have reported that this surface, rich in amines, carboxyls, or other functional groups, favors the interaction with analytes and allows the development of sensors (Pan et al 2017 ; Sistani and Shekarchizadeh 2021 ; Guan et al 2022 ).…”