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<p>To solve the growing environmental catastrophe faced by low-density polyethylene (LDPE) trash, this study explored&#xa0;the degrading capacity of Pseudomonas aeruginosa, a bacterial strain isolated from plastic-contaminated locations. <i>Pseudomonas aeruginosa</i> was added to LDPE samples and incubated for 60 days. The effectiveness of the bacteria's degradation was assessed using a variety of characterisation methods. Significant morphological changes, such as surface pitting and cracking, which are suggestive of polymer breakdown, were found by SEM examination. While GC–MS analysis revealed a variety of hydrocarbon degradation byproducts, including alkanes, alkenes, alcohols, and acids, FTIR spectroscopy verified bond weakening within the LDPE structure, indicating the active metabolism of LDPE into smaller, more biodegradable molecules. <i>Pseudomonas aeruginosa</i> active site residues form stable complexes with LDPE, promoting its depolymerization through hydrophobic and hydrogen bond interactions, according to molecular docking experiments that shed light on the enzyme&#xa0;substrate interactions. The results highlight the potential of <i>Pseudomonas aeruginosa</i> as a biotechnological agent for the sustainable management of plastic waste. This study advances the development of environmentally friendly remediation techniques that support the global Sustainable Development Goals (SDGs) to reduce plastic pollution and mitigate the effects of climate change by proving a feasible pathway for the microbial degradation of LDPE. To improve degradation efficiency across different polymer types and open the door for scalable bioremediation applications, future research may concentrate on refining microbial enzymatic pathways&#xa0;by using artificial intelligence, intelligent manufacturing in Industry 6.0/ 7.0 and investigating synergistic microbial consortia.</p>

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Ecofriendly techniques for the sustainable degradation of synthetic plastic polymers using a bacterial hyperproducer

  • 期刊论文

  • 发表日期：

    2025年5月6日

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  • Hammad Majeed,
  • Tehreema Iftikhar,
  • Qamar Abbas

摘要

To solve the growing environmental catastrophe faced by low-density polyethylene (LDPE) trash, this study explored the degrading capacity of Pseudomonas aeruginosa, a bacterial strain isolated from plastic-contaminated locations. Pseudomonas aeruginosa was added to LDPE samples and incubated for 60 days. The effectiveness of the bacteria's degradation was assessed using a variety of characterisation methods. Significant morphological changes, such as surface pitting and cracking, which are suggestive of polymer breakdown, were found by SEM examination. While GC–MS analysis revealed a variety of hydrocarbon degradation byproducts, including alkanes, alkenes, alcohols, and acids, FTIR spectroscopy verified bond weakening within the LDPE structure, indicating the active metabolism of LDPE into smaller, more biodegradable molecules. Pseudomonas aeruginosa active site residues form stable complexes with LDPE, promoting its depolymerization through hydrophobic and hydrogen bond interactions, according to molecular docking experiments that shed light on the enzyme substrate interactions. The results highlight the potential of Pseudomonas aeruginosa as a biotechnological agent for the sustainable management of plastic waste. This study advances the development of environmentally friendly remediation techniques that support the global Sustainable Development Goals (SDGs) to reduce plastic pollution and mitigate the effects of climate change by proving a feasible pathway for the microbial degradation of LDPE. To improve degradation efficiency across different polymer types and open the door for scalable bioremediation applications, future research may concentrate on refining microbial enzymatic pathways by using artificial intelligence, intelligent manufacturing in Industry 6.0/ 7.0 and investigating synergistic microbial consortia.