Laser-Induced Graphene (LIG) enables the rapid conversion of organic materials into porous, conductive carbon. Moreover, Laser precision allows the direct patterning of electrodes and circuits onto biobased substrates. This project aims to investigate different lignin sources that will be treated by LIG for obtaining biosourced carbon electrodes. The final objective of the LIG2 project is to demonstrate lignin-derived LIG functionalized with aptamer probes as a platform for low-cost electrochemical biosensors with low carbon imprint.