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Identification and characterization of filamentous fungi isolated from a local landfill with potential to degrade low density polyethylene
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Researchers isolated 12 fungal strains from a Colombian landfill and identified three isolates — belonging to genera including Trichoderma — capable of biodegrading low-density polyethylene (LDPE), highlighting the potential of landfill-derived microorganisms as candidates for plastic biodegradation strategies.
Descripción: Las proyecciones para el año 2050 estiman que la cantidad de plástico en el planeta será de aproximadamente 26000 millones de toneladas, de los que el 79% se almacenará en vertederos y medios naturales. Actualmente, la distribución de este polímero alcanza a todos los biomas terrestres, y el problema se agrava al considerar que los métodos de manejo de estos residuos (vertederos, reciclaje e incineración) suponen una solución momentánea y no sostenible. En consecuencia, es evidente la necesidad de métodos que permitan degradar el material plástico y así aminorar los daños causados por su presencia en los ecosistemas. En este sentido, la biodegradación plantea ser una estrategia con alto potencial, dado que aprovecha la capacidad que tienen algunos microorganismos de utilizar los polímeros plásticos como fuente de carbono. Este estudio tuvo como objetivo aislar, identificar y caracterizar hongos con potencial en la degradación del polietileno de baja densidad (PEBD), uno de los polímeros sintéticos de mayor producción a nivel mundial. Para ello, se aislaron hongos a partir de materiales plásticos depositados en un basurero de Bucaramanga (Santander). Las muestras colectadas se sembraron en medios con PEBD y 0.5 g/L de glucosa. Posteriormente, se identificó el género de los hongos recuperados en el paso anterior, y se clasificó cada aislado según su potencial para biodegradar el PEBD. Como resultado, se obtuvieron 12 aislados fúngicos a partir de las 34 muestras plásticas colectadas. Estos se identificaron como ejemplares de los géneros Penicillium, Aspergillus, Fusarium y Trichoderma; siendo este último el más común. Finalmente, se evidenció que tres (3) de los aislados, A04, A05 y A11 son degradadores del PEBD, por tanto, son especímenes con potencial para el estudio de la biodegradación de este polímero.
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Biodegradación de polietileno de baja densidad en suelo con hongos del género Aspergillus sp.
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Researchers tested whether three Aspergillus fungal species could biodegrade low-density polyethylene (LDPE) plastic in soil over 30 and 60 days, finding that a consortium of all three species achieved up to 18.45% degradation of thinner LDPE samples within 60 days. These results suggest Aspergillus fungi hold biotechnological potential as a biological strategy to mitigate plastic pollution in soil environments.
Comparative proteomics of native plastic-degrading fungal strains as a tool in the identification of enzymes of biotechnological interest
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This study uses comparative proteomics to characterize the molecular machinery underlying plastic degradation in naturally occurring fungal strains. By profiling protein expression differences across strains with varying degradation activity, it identifies candidate enzymes involved in polymer breakdown. The results provide a basis for engineering more efficient fungal systems for plastic bioremediation.
Characterization and Potential Evaluation of Plastic-Degrading Fungi Isolated from Kaliabu Landfill, Indonesia
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Fungi isolated from an Indonesian landfill, particularly Aspergillus and Cladosporium species, reduced the mass of low-density polyethylene by up to 22% over 28 days, demonstrating meaningful biodegradation potential. Identifying indigenous plastic-degrading microorganisms is important for developing biological treatment strategies that could reduce the environmental accumulation of LDPE, a common source of microplastics.
Characterization and Potential Evaluation of Plastic-Degrading Fungi Isolated from Kaliabu Landfill, Indonesia
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Researchers isolated ten fungal species from an Indonesian landfill and found that Aspergillus and Cladosporium isolates achieved up to 22% weight loss of low-density polyethylene (LDPE) within 28 days under laboratory conditions. These locally sourced plastic-degrading fungi represent a promising biological approach to reducing LDPE waste, a major source of microplastic fragments in the environment.
“Isolation And Molecular Characterization Of Polythene-Degrading Fungus From Dumping Sites In Bhopal District, Madhya Pradesh”
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This study isolated and characterized fungal strains from a plastic waste dump in Bhopal, India, evaluating their capacity to biodegrade low-density polyethylene (LDPE). Aspergillus niger, A. flavus, and Penicillium chrysogenum demonstrated the highest LDPE degradation rates—up to 33.25% weight loss at 28°C over 16 weeks—highlighting their potential as biological agents for plastic bioremediation.
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