
Link: https://www.cnn.com/2019/12/02/asia/soybeans-plastic-wrap-intl-hnk/index.html
Soybean is one of the important ingredients in Asian diet, commonly used to make tofu, soymilk, etc. Recently, scientists have found another use of soybeans: an alternative for plastic. William Chen, a professor at Singapore's Nanyang Technological University, invented a biodegradable food wrap made of cellulose. According to Chen, they can extract the cellulose from the large amounts of residues of soybean products, and will form a form of fiber after going through a fermentation process. Durian husks, which are full of cellulose, can also be turned into plastic wraps.
This is not the first case of cellulose based plastic wraps, but it is the most sustainable. Chen's approach not only helps reduce the amount of plastic but also reducing the amount of food waste. F&N, a soy-based drinks producer, had collaborated with Chen's lab by providing residues directly from the factory. These bio-plastics costs "almost nothing" because the materials are free, the only charge would be expenses such as storage and quality control.
Previous bio-plastics are problematic when degrading because it requires full exposure to temperatures over 50 degrees Celsius for a long time to fully degrade. But Chen's soy-based bio-plastic will be digested by microbes and completely disappear with in a month. Chen says, "My dream is that our technology, which is cheap and simple to implement, will cut plastic and food waste and create a cleaner environment."
Questions:
1. Do you think this is a sustainable approach to reduce plastic usage?
2. How would the government or the people maximize its impact?
3. In what ways can the government help in reducing plastic?