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In Silico Study of Enzymatic Degradation of Bioplastic by Microalgae: An Outlook on Microplastic Environmental Impact Assessment, Challenges, and Opportunities
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Researchers used computer modeling to explore how enzymes produced by microalgae might break down bioplastics, proposing microalgae as a biological tool for degrading plastic pollution. This work matters because finding microorganisms that can break down plastics could offer an environmentally friendly way to reduce the accumulation of microplastics in ecosystems.
Microplastics are tiny pieces of non-biodegradable plastic that can take thousands of years to break down. As microplastics degrade, they release harmful compounds into the environment, which can be found in the surroundings. The microplastics found in the environment are hard to detect and remove because of their small particle sizes. Microplastics cannot decompose naturally, so they accumulate in the environment and cause pollution. As a result, bioplastics can be produced from a vast array of substrates, including biopolymers, citrus peels, leather, and feather wastes. Blue-green microalgae namely Arthrospira platensis (spirulina) contains enzymes such as laccase and catalase which can be responsible for the degradation of bioplastics. In our study, we performed molecular docking to identify the binding affinities of different enzymes such as laccase and catalase with different substrates, focusing on determining the most suitable substrate for enhancing enzyme activity for degradation of bioplastics. The analysis revealed that veratryl alcohol is the most suitable substrate for laccase, whereas lignin is the more preferred substrate for catalase with the highest binding affinity score of - 5.9 and - 8.1 kcal/mol. Moreover, degradation, challenges, opportunities, and applications of bioplastics in numerous domains such as cosmetics, electronics, agriculture, medical, textiles, and food industries have also been highlighted.
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This meta-analysis explores biological approaches to breaking down mixed plastic waste using enzymes and microorganisms identified through computational methods. The research is relevant to microplastic concerns because developing effective ways to biologically degrade plastics could help reduce the volume of plastic waste that eventually fragments into the microplastics found in our food and water.
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Researchers systematically reviewed how bacteria, fungi, and algae can break down microplastics through enzymes and biofilms, and how cutting-edge tools like genomics and genetically engineered microbes are improving biodegradation efficiency. While microbial bioremediation is a promising sustainable approach to microplastic pollution, challenges around scalability and varying degradation rates in real environments still need to be overcome.
Unlocking the Potential for Microplastic Degradation: In Silico Mutagenesis and Molecular Dynamics Simulations of PET-PETase and MHET-MHETase Interactions by Reverse Screening
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Scientists used computer simulations to design improved versions of plastic-eating enzymes, making small tweaks that helped them grip and break down plastic more effectively. This matters because microplastics are increasingly found in our bodies and environment, and better enzymes could eventually help clean up plastic waste before it affects human health. These enzyme variants still need to be tested in real lab conditions before practical use.
Harnessing Microorganisms for Microplastic Degradation: A Sustainable Approach to Mitigating Environmental Pollution
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This review surveys microorganisms—bacteria, fungi, and other taxa—capable of degrading microplastics, examining the enzymes, metabolic pathways, and environmental conditions involved, and assessing the practical potential of harnessing these organisms for bioremediation of plastic pollution.
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