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Bio-removal of bisphenol A by cyanobacterium Gloeocapsopsis crepidium
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Researchers tested the ability of the cyanobacterium Gloeocapsopsis crepidium to biodegrade bisphenol A, a toxic endocrine-disrupting compound that can be released from microplastic pollution. The organism was exposed to varying concentrations of BPA under controlled laboratory conditions, and results showed significant bioremoval capacity. The study suggests that naturally occurring cyanobacteria may offer a low-cost biological method for reducing BPA contamination in aquatic environments.
Bisphenol A (BPA) has attracted worldwide attention as a toxic and endocrine-disrupting substance. It can be released into aquatic habitats through microplastic pollution, harming all aquatic life. To reduce its effects and toxicity, it has been necessary to use biological methods that occur naturally in water and are cheap and easy to obtain, such as algae. For this reason, the cyanobacterium Gloeocapsopsis crepidium was used to test its ability to biodegrade this toxic compound by exposing it to different concentrations of BPA (1, 5, 10, 20, 50, 75, 100) mg/l under controlled laboratory conditions at 25°C and a light intensity of 60 µmol m-2s-1. The results of the bioremoval of bisphenol A by the cyanobacterium Gloeocapsopsis crepidium exposed to the different concentrations of BPA (1, 5, 10, 20, 50, 75, 100) mg/l show higher removal efficiencies, the results showed that the highest removal efficiency reached 100% at 1mg/l BPA with residual value 0 mg/l. In contrast, the highest residual value reached 20.52 mg/l at 100 mg/l BPA with a removal percentage of 79.48%. These results are supported by statistical analysis with significant differences at p≤0.05.
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Researchers found that polystyrene microplastics inhibited the biodegradation of bisphenol A (BPA) by the microalga Chlorella vulgaris, with combined exposure showing greater toxicity than either contaminant alone due to BPA adsorption onto microplastic surfaces.
Green algae for the removal of bisphenol A: Integrated analysis of toxicological and metabolic responses at the cellular and molecular levels
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BPA, a chemical released as microplastics break down, is a known toxic pollutant found in water, soil, and even air—and this review rounds up what scientists currently know about how green algae can help remove it from water. The good news: some algae naturally break down or absorb BPA, offering a promising, low-cost way to clean up contaminated water, though BPA exposure also affects the algae's own health and growth. Since these algae sit at the bottom of the food chain and are also used to make foods and supplements, understanding how they handle BPA matters for both cleaning up pollution and keeping our food and water supplies safer.
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This review examines the potential of cyanobacteria to bioremediate microplastic pollution, which has accumulated globally since the 1950s. Cyanobacteria can colonize plastic surfaces and contribute to plastic degradation, offering an eco-friendly pathway for reducing microplastic contamination in aquatic and terrestrial environments.
Role of Fungi in Biodegradation of Bisphenol A: A Review
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This review examined the role of fungi in biodegrading bisphenol A, a widespread endocrine disruptor that leaches from plastics into water sources, highlighting fungal enzymes and degradation pathways as promising approaches for environmental remediation.
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Researchers tested how micro-sized biodegradable plastics made from polylactic acid and polyhydroxybutyrate affect a common freshwater cyanobacterium. They found that even biodegradable microplastics inhibited the growth and photosynthetic activity of the organism, though to a lesser extent than conventional plastics. The study suggests that switching to biodegradable plastics does not eliminate the risk of microplastic-related harm to aquatic microorganisms.
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