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Biofilm Formation of Clinically Important Bacteria on Bio-Based and Conventional Micro/Submicron-Sized Plastics.
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This study compared how clinically important bacteria form biofilms on bio-based versus conventional plastic surfaces of similar size, finding differences in biofilm formation patterns between bioplastics and their conventional equivalents. The results suggest that the push to replace conventional plastics with bioplastics should consider how these materials interact with potentially harmful bacteria.
Micron/submicron-sized plastic debris in the environment is a global issue of increasing concern and may harm human health. A large number of studies have shown that plastic debris has various toxicological effects on different organisms. Thus, efforts have increased to replace conventional plastics with bioplastics. However, investigations on the relation of submicron-sized bioplastics- and conventional plastics to culture-dependent biofilm formation and their similarities and discrepancies are still very limited. For this purpose, two end products made from bioplastics and their equivalent end products from conventional plastics were used to examine the response of the biofilm formation of selected clinically important bacteria. To evaluate the similarities and differences of submicron-sized bioplastics and conventional plastics on biofilm formation, the physicochemistry (particle size, zeta potential, chemical composition, and surface chemistry) of the tested plastics was examined, as well as the characteristics of the biofilms (categorization, protein/carbohydrate).
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Similarities and Discrepancies Between Bio-Based and Conventional Submicron-Sized Plastics: In Relation to Clinically Important Bacteria.
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This study compared the effects of bio-based and conventional submicron-sized plastic particles on clinically important bacteria, finding that bioplastics interacted with bacteria in ways that differed from but were not uniformly less harmful than conventional plastics. The results suggest that bioplastics are not necessarily safer than conventional plastics in terms of their interactions with microorganisms.
Microbiological Characterization of the Biofilms Colonizing Bioplastics in Natural Marine Conditions: A Comparison between PHBV and PLA
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Researchers characterized biofilm communities colonizing bioplastics and conventional plastics in natural marine conditions, finding that bioplastic surfaces hosted distinct microbial communities compared to petroleum-based plastics, with implications for biodegradation and ecological interactions.
Degradation of subµ-sized bioplastics by clinically important bacteria under sediment and seawater conditions: Impact on the bacteria responses.
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Researchers found that clinically important bacteria colonized submicron-sized bioplastic particles in both seawater and sediment and showed biochemical stress responses to the bioplastics. The ability of pathogens to form biofilms on bioplastic surfaces in marine environments raises concerns that bioplastics, like conventional plastics, could act as vectors for disease-causing microorganisms.
Structural and Functional Characteristics of Microplastic Associated Biofilms in Response to Temporal Dynamics and Polymer Types
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Researchers found that biofilm structural and functional characteristics on microplastics differ significantly depending on polymer type (polyethylene, polypropylene, and polystyrene) and change over time, with implications for understanding microbial colonization and the plastisphere.
Colonization characteristics and surface effects of microplastic biofilms: Implications for environmental behavior of typical pollutants
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This review examines how bacteria colonize microplastic surfaces in water, forming biofilms that change how the plastics behave in the environment. These biofilms alter the surface properties of microplastics and affect how they absorb and transport heavy metals and other pollutants. Understanding biofilm formation on microplastics is important because it can make the particles more dangerous by concentrating toxic substances that could eventually enter the food chain.
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