# New packagings

**Published by:** [YaleGordon](https://paragraph.com/@yalegordon/)
**Published on:** 2023-06-01
**URL:** https://paragraph.com/@yalegordon/new-packagings

## Content

Scientists at the American Massachusetts Institute of Technology (Jer Liu Daqun) developed a food package, made up of wires, which can be traced during exposure to perishable food and rapidly degraded in soil. The relevant research papers are published in the latest edition of the American Chemical Society Journal, ACS Nano. The research leader, Benedito Masili, stated that the date labels on perishable foods did not properly predict when the food would change, which could lead to food waste or food poisoning. They therefore decided to produce a new package that could respond to changes in food in order to better indicate when food is changing. They produced four thin films of plastic-like packagings, each consisting of two layers, one of which was made of protein extracted from wires and the other by a common price organic framework (COF). COF contains carbon and hydrogen, as well as other atomics, such as oxygen or nitrogen, all of which are ranked in an even grid with sufficient space among each other, thus creating many pores. The four membranes were examined by the researchers, which confirmed that they were sufficient to be used for packing and not toxic. They then tested the biodegradability of these thin films. The results show that, 30 days after the top-performing membrane in the soil, 50 per cent of the membrane is degraded to the same extent as existing biodegradable plastics. COF layers and liquid switches and electronics, so new materials can be converted into different pH solutions. Since the pH value of food will increase as a result of changing quality, researchers use a thin film as an intelligent brand label on a chicken meat. At the beginning of the label, orange, 20 hours after the temperature of 30°C, the colour of the label changed by 17 per cent, indicating that meat had begun to change.

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