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Optimizing Eco-Friendly Degradation of Polyvinyl Chloride (PVC) Plastic Using Environmental Strains of Malassezia Species and Aspergillus fumigatus
Faculty
Pharmacy
Year:
2023
Type of Publication:
ZU Hosted
Pages:
Authors:
Amira Mohamed Mohamed Ali Elganayny
Staff Zu Site
Abstract In Staff Site
Journal:
International Journal of Molecular Sciences MDPI
Volume:
Keywords :
Optimizing Eco-Friendly Degradation , Polyvinyl Chloride (PVC)
Abstract:
Worldwide, huge amounts of plastics are being introduced into the ecosystem, causing environmental pollution. Generally, plastic biodegradation in the ecosystem takes hundreds of years. Hence, the isolation of plastic-biodegrading microorganisms and finding optimum conditions for their action is crucial. The aim of the current study is to isolate plastic-biodegrading fungi and explore optimum conditions for their action. Soil samples were gathered from landfill sites; 18 isolates were able to grow on SDA. Only 10 isolates were able to the degrade polyvinyl chloride (PVC) polymer. Four isolates displayed promising depolymerase activity. Molecular identification revealed that three isolates belong to genus Aspergillus, and one isolate was Malassezia sp. Three isolates showed superior PVC-biodegrading activity (Aspergillus-2, Aspergillus-3 and Malassezia) using weight reduction analysis and SEM. Two Aspergillus strains and Malassezia showed optimum growth at 40 °C, while the last strain grew better at 30 °C. Two Aspergillus isolates grew better at pH 8–9, and the other two isolates grow better at pH 4. Maximal depolymerase activity was monitored at 50 °C, and at slightly acidic pH in most isolates, FeCl3 significantly enhanced depolymerase activity in two Aspergillus isolates. In conclusion, the isolated fungi have promising potential to degrade PVC and can contribute to the reduction of environmental pollution in eco-friendly way.
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Amira Mohamed Mohamed Ali Elganayny, "Aspergillus nidulans hypB encodes a Sec7-domain protein important for hyphal morphogenesis", Elsevier, 2008
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Department Related Publications
Eman Mahmoud Hassan Elmasry, "Studies on Chemoantibiotics Resistant patterns linked to Bacteriocin Production in Clinical Isolates of Gram -Negative Rods .", لايوجد, 1900
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