Dietary polystyrene microplastics at 500 μm impair growth and cause tissue damage in Carassius gibelio var. Qihe, reducing body weight by up to 100 μg/g feed exposure.
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biodegradable polymer synthesis and properties
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Microorganisms can both produce and degrade key bio-based plastics, but current capabilities limit their role in establishing a sustainable circular plastics economy.
Microbial and enzymatic degradation can effectively break down plastics, but only 10-20% of reported cases are reliably validated as true biodegradation.
Biodegradable polylactic acid microplastics significantly reduce soil ecosystem multifunctionality by up to 27% during maize growth, mainly through impacts on bacterial diversity and nutrient cycling.
Metagenomic enzymes targeting stable bonds in plastics show promise but currently lack sufficient activity for efficient nylon and polyurethane depolymerization.
Microplastic pollution and ecological risks vary significantly across economic activity environments, with landfill and Yellow River Basin areas showing higher MP abundance and risks.
Polystyrene micro/nanoplastics (50 nm and 500 nm) significantly increase tetracycline hydrochloride toxicity in Paramecium tetraurelia, with effects varying by particle size.
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