Scientists Develop a Wound Dressing That Fights Infection Before It Spreads

Researchers at the University of Bath have developed a new plant-based wound dressing that can deliver antibiotics directly to wounds at the earliest stages of infection. The study, published in the journal Bioactive Materials, is the first to use a family of sustainable furan-based polymers to combat infections through wound dressings. These polymers had previously been studied for use in sustainable plastics and packaging.

Wound infections are a serious challenge for healthcare systems worldwide. Bacteria can enter a wound and begin forming a protective slimy layer known as a biofilm within hours. This slows healing and makes infections significantly more difficult to treat.

A team from the Department of Chemical Engineering developed a two-sided dressing made from a sustainable polymer — a plastic-like material derived from plants rather than petrochemicals, Nauka Rossii reports. One side of the dressing rapidly releases antibiotics into the wound, while the other acts as a barrier, maintaining a protected environment for healing.

The new dressing begins working at an early stage, before a biofilm forms, when treatment is most effective. It rapidly releases the antibiotic and reaches an effective concentration within four hours, reducing biofilm formation by 90%.

Unlike many existing wound dressings that use petroleum-based plastics or additional chemical agents, the new dressing consists of just two plant-based layers with different properties. Two types of polymers are woven into a thin network of microscopic fibers. The side facing the wound contains tetracycline, a widely used antibiotic. The outer side repels water, helping regulate moisture loss and promoting healing.

Dr. Xiang Ding, the study’s lead author, said: “The materials we used are very similar in chemical composition; they differ by only two carbon atoms. But by turning them into ultrafine fibers, we can amplify tiny molecular differences, resulting in completely different properties. We were able to create a smart dressing without additional chemical modifications that simultaneously directs the antibiotic toward the wound, preventing its unnecessary use elsewhere, while also acting as a barrier to protect the wound.”

The scientists tested the dressing against two common bacteria, Staphylococcus aureus and Pseudomonas aeruginosa. Laboratory tests using wound models showed a significant reduction in bacterial growth and biofilm formation after the dressing was applied. The material was also compatible with human skin cells and showed no signs of toxicity in laboratory testing.

The study demonstrates how plant-based materials originally developed for sustainable plastics and packaging can be adapted for advanced medical technologies. Although further testing will be required before the dressing can be used clinically, the findings highlight the potential of sustainable wound-care technologies without compromising effectiveness.