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Protein corona-induced aggregation of differently sized nanoplastics: impacts of protein type and concentration
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The aggregation behavior of two sizes of nanoplastic particles in aquatic environments differed depending on the electrical characteristics and concentration of proteins present. Protein coronas altered particle-particle interactions, with implications for nanoplastic fate and transport in natural water systems.
The aggregation of two sizes of nanosized plastic particles in aquatic environments was different in the presence of proteins with various electrical characteristics and concentrations.
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Researchers investigated how protein coronas form on polyethylene and polypropylene microplastics in biological media, finding that proteins act as surfactants that alter the colloidal behavior and stability of microplastics in aquatic environments.
Different electrically charged proteins result in diverse transport behaviors of plastic particles with different surface charge in quartz sand
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This study found that protein coatings on microplastic surfaces significantly changed how the particles moved through quartz sand, with the effect depending on whether the proteins were positively or negatively charged. Protein coronas that form on microplastics in biological systems alter their transport behavior, which is important for understanding how plastic particles move through both environmental systems and the human body.
Influence of protein configuration on aggregation kinetics of nanoplastics in aquatic environment
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Researchers investigated how five different proteins with varying structures affect the aggregation behavior of polystyrene nanoplastics in water under different ionic strength and pH conditions. They found that protein type and configuration significantly influenced whether nanoplastics clumped together or remained dispersed, with globular proteins like albumin having different effects than fibrous proteins like collagen. The study suggests that the protein composition of natural waters plays an important role in determining how nanoplastics behave and transport in aquatic environments.
The crucial role of a protein corona in determining the aggregation kinetics and colloidal stability of polystyrene nanoplastics
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Time-resolved dynamic light scattering was used to study how protein coronas — protein layers that form on nanoplastics in biological or environmental fluids — control the aggregation kinetics and colloidal stability of polystyrene nanoplastics. Protein identity and concentration profoundly shifted nanoplastic behavior, with implications for how these particles move and persist in natural water systems.
Protein corona-mediated transport of nanoplastics in seawater-saturated porous media
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Protein coatings on polystyrene nanoplastics in seawater-saturated sand dramatically altered their transport behavior: negatively charged albumin coatings enhanced transport of smaller particles while positively charged lysozyme triggered aggregation and retention of the smallest particles. The results show that protein coronas in aquatic systems can either accelerate or limit nanoplastic migration in porous environments.
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