The novel material is made up of a seaweed-based polymer combined with genetically engineered bacteria.
For this innovation, the living material was made using alginate – a natural polymer extracted from seaweed. It was subsequently hydrated, resulting in the formation of a gel solution. Following this step, the gel was combined with engineered cyanobacteria, a photosynthetic bacteria that thrive in aquatic environments.After conducting a series of rigorous tests on different 3D-printed geometrics for their living material, the team opted for a grid-like structure.
Furthermore, the grid-like design boasts another notable characteristic: "a high surface area to volume ratio." This expanded surface area considerably improves the new material's decontamination powers.Notably, this genetically edited bacteria enables the production of a decontaminating enzyme known as laccase.
Previous studies have demonstrated the efficacy of laccase to neutralize a wide range of organic contaminants, including bisphenol A , antibiotics, pharmaceutical drugs, and dyes. Another important aspect of this modified bacterium is its capacity to "self-destruct" after its task of purification is complete.
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