According to foreign media new atlas, disposable diapers are definitely not environmentally friendly, not only because of its plastic shell, but also because of its petroleum based absorbent inner layer. As the main protein of wheat, wheat gluten is famous for its high water absorption. It’s a surplus by-product of the production of wheat starch and ethanol – which means that wheat is grown not just for gluten, so it can still be used as a source of food or fuel. < / P > < p > for the diaper layer material, an international team of scientists first changed the chemical composition of natural gluten, making it 10 times more able to expand and absorb liquids. In order to make the structure more cohesive, they also added gardenia extract. This makes the gluten molecules cross-linked. < / P > < p > it is claimed that the resulting biopolymer has an expansion rate of 4000% in water and 600% in saline solution, which is similar to other bio based materials that are not extracted from by-products (which may reduce their sustainability). More importantly, scientists believe that by adjusting the formulation of the material, its water absorption will eventually be comparable to that of petroleum based synthetic materials. < / P > < p > in the future, this biopolymer can be used not only for diapers, but also for personal hygiene and medical products, as well as materials for flood mitigation and agricultural rainwater retention. Recently, a paper on this research was published in the journal advanced sustainable systems. The scientists involved in the study were from the Royal Swedish Institute of technology, the Swedish University of Agricultural Sciences and Kyoto University in Japan. After 12 years, “world class Super project” Shantou Bay Tunnel ushers in a historic breakthrough today