Scientists have engineered bacteria to help break down plastic waste.

Inspired by the natural adhesive properties of mussels, the researchers created microorganisms capable of sticking to and degrading polyethylene terephthalate (PET), one of the most challenging types of plastic waste. 

Their findings, published in Small Methods, offer a promising new approach to tackling plastic pollution and biofouling in industries like shipping and healthcare.

Led by Han Xiao, director of Rice University’s Synthesis X Center, the team used the amino acid 3,4-dihydroxyphenylalanine (DOPA), which gives mussels their powerful adhesive ability. 

They enhanced the bacteria’s adhesion to PET by 400 times, allowing them to efficiently bind to plastic and degrade it using the enzyme polyethylene terephthalate hydrolase.

PET is a major pollutant, accounting for 64 per cent of the 40 million tons of plastic waste generated annually in the US.

PET takes centuries to break down naturally, making this research especially significant for plastic recycling efforts. 

Beyond plastics, the research has potential in preventing biofouling, the harmful build-up of organic matter on underwater surfaces like ships and medical devices. 

DOPA-modified proteins could create a protective barrier, preventing microorganism accumulation. 

There is biomedical potential too, including applications in tissue engineering and drug delivery.

This email address is being protected from spambots. You need JavaScript enabled to view it. CareerSpot News