A new polymer-based laccase for decolorization of AO7: Long-term storage and mediator reuse

- New laccase composite N-PS-Lac was fabricated for water decolorization from AO7.
- N-PS-Lac-3 exhibited outstanding stability after 2-year storage at 4 °C.
- FTIR suggested the great rigidification of polymer on laccase conformation.
- A two-step method was proposed to reuse HOBT.
- The toxicity of AO7 solution was completely by two-step method.