Scientists in Singapore Transform Fruit Leftovers into Antibacterial Bandages

Durian husk and petri dish containing cellulose hydrogel sheet made out of durian husk with yeast phenolics are seen in Singapore September 16, 2021. (Reuters)
Durian husk and petri dish containing cellulose hydrogel sheet made out of durian husk with yeast phenolics are seen in Singapore September 16, 2021. (Reuters)
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Scientists in Singapore Transform Fruit Leftovers into Antibacterial Bandages

Durian husk and petri dish containing cellulose hydrogel sheet made out of durian husk with yeast phenolics are seen in Singapore September 16, 2021. (Reuters)
Durian husk and petri dish containing cellulose hydrogel sheet made out of durian husk with yeast phenolics are seen in Singapore September 16, 2021. (Reuters)

Scientists at Nanyang Technological University (NTU) in Singapore are tackling food waste by turning discarded durian husks into antibacterial gel bandages.

The process extracts cellulose powder from the fruit’s husks after they are sliced and freeze-dried, then mixes it with glycerol. This mixture becomes soft hydrogel, which is then cut into bandage strips.

“In Singapore, we consume about 12 million durians a year, so besides the flesh, we can’t do much about the husk and the seeds and this cause environmental pollution,” said Professor William Chen, director of the food science and technology program at NTU. The fruit’s husks, which make up more than half of the composition of durians, are usually discarded and incinerated, contributing to environmental waste.

Chen added that the technology can also turn other food waste, such as soy beans and spent grains, into hydrogel, helping limit the country’s food waste.

Compared to conventional bandages, the organo-hydrogel bandages are also able to keep wound areas cooler and moist, which can help accelerate healing.

The researchers say using waste materials and yeast for the antimicrobial bandages is more cost effective than the production of conventional bandages, whose antimicrobial properties come from more expensive metallic compounds like silver or copper ions.

A durian wholeseller, Tan Eng Chuan, said he goes through at least 30 crates of durians a day during durian season - as much as 1,800 kg. Being able to use the parts of the fruit that are ordinarily discarded, he said, was an innovation that would make enjoying it “more sustainable”.



Rare Purple-Flowered 'Zilla' Spotted in Saudi Northern Borders Region

The rare and beautiful plant is often called locally "shabram". - SPA
The rare and beautiful plant is often called locally "shabram". - SPA
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Rare Purple-Flowered 'Zilla' Spotted in Saudi Northern Borders Region

The rare and beautiful plant is often called locally "shabram". - SPA
The rare and beautiful plant is often called locally "shabram". - SPA

Zilla, the plant with striking purple flowers, has recently been spotted in the serene valleys of the Northern Borders region.
The rare and beautiful plant is often called locally "shabram".
The chairman of the board of directors of the Aman Environmental Association, Nasser bin Arshid Al-Majlad, said that the Northern Borders region, with its diverse terrain, supports a variety of plant life, each with its unique value. Zilla, in particular, plays a crucial role in the local ecosystem, providing nectar for bees and forage for livestock, especially camels. However, due to overgrazing and other factors, the population of this plant has declined significantly in recent years, SPA reported.
The Aman Environmental Association is dedicated to raising awareness about the importance of preserving the region's natural heritage. By highlighting the beauty and ecological significance of plants like the Zilla, the association aims to inspire individuals to take action and protect the environment.