Researchers from the University of Sydney have made a revolutionary finding, with the potential to transform plastic recycling. Under the leadership of Professor Ali Abbas, the team identified a marine fungus capable of breaking down polypropylene (PP5).
This is one of the most challenging plastics to recycle, found in food packaging, bottle caps, and hangers. This discovery could represent a decisive change in plastic waste management globally.
### Promising Laboratory Results
Initial tests have shown unprecedented progress.
_”The marine fungus has demonstrated even greater potential than the land strains we identified in 2023,”_ noted Abbas.
In previous studies, scientists were able to degrade up to 27% of polypropylene in 90 days.
While in 2023, land fungi could break down 21% of PP5 in just 30 days, this new microorganism shows much higher efficacy, which could accelerate industrial recycling processes.
### How the Degradation Process Works
The plastic does not decompose spontaneously, but is first pre-treated with ultraviolet light or heat, simulating the natural wear of the material.
It is then immersed in a liquid solution with the fungus, where biological enzymes begin to break down the molecular chains of polypropylene.
_”Fungi produce natural enzymes capable of degrading complex materials like plastic. We just need to provide them with the right conditions,”_ explained Abbas.
Unlike conventional methods, this process requires lower temperatures, reducing energy consumption, making it feasible on an industrial scale.
### The Issue of Polypropylene and its Low Recycling Rate
Polypropylene accounts for approximately 20% of plastic packaging used in Australia, but only 8% manages to be recycled, according to a report by the Australian Packaging Covenant Organisation.
Its complex chemical structure and material contamination hinder its effective reuse.
### Not a Miracle Solution, but Paves the Way
Despite the enthusiasm for this discovery, Abbas warns that the fungus is just one part of the set of strategies needed to address the plastic crisis.
_”The priority remains reducing the production of plastic waste and promoting a circular economy,”_ he emphasized.
### Next Steps and Commercial Outlook
The team of scientists is working on optimizing the process and seeking strategic partnerships with the industry.
If the tests continue successfully, they could present a viable commercial solution in the coming years, transforming plastic recycling and waste management.
This breakthrough ushers in a new era in environmental biotechnology, positioning marine fungi as a key tool in the fight against global pollution.
