Researchers from Nanyang Technological University (NTU) have successfully developed a process to transform food waste into antibacterial hydrogel.
The process involves chopping and freeze-drying discarded durian peels, followed by extracting cellulose powder and mixing it with glycerol. This mixture creates a soft hydrogel, which is then cut into strips of antibacterial hydrogel.
A Petri dish showing the steps of transforming durian peels into antibacterial bandages, with the final product placed next to regular medical bandages for comparison. (Photo: Reuters)
“In Singapore, we consume about 12 million durians each year. Aside from the flesh, there is not much we can do with the peels and seeds. Durian peels, which account for more than half of the durian’s composition, are often discarded and burned, contributing to environmental waste,” said Professor William Chen, Director of the Food Science and Technology Program at NTU.
The research team added that this technology could also convert other food waste, such as soybean husks and used grains, into hydrogel, helping to reduce food waste in the country.
Compared to conventional medical bandages, organo-hydrogel bandages can keep the wound area cooler and more humid, aiding in the healing process. Additionally, using food waste and yeast to create antibacterial bandages is more cost-effective than bandages with antibacterial properties derived from expensive metal compounds like silver or copper ions.
Professor William Chen (left) and Dr. Tracy Cui, the authors of the study. (Photo: Reuters).
“The advantage of this type of medical bandage is that it is moist! Therefore, it prevents the wound from drying out and reduces itching, making it suitable for individuals with skin conditions such as eczema,” Chen emphasized.
Tan Eng Chuan (75 years old) is a durian trader. During the season, he sells at least 30 crates of durians each day, equivalent to 1,800 kg. In an interview with Reuters, he expressed that utilizing discarded parts of the fruit for medical bandages is an innovation that helps agriculture become more sustainable.
