Fig. 2. Characterization of GOx-chi-LNPs.
a Hydrodynamic diameter and b ζ-potential distributions of lignin nanoparticles employed in this work. (red squares) LNPs, (purple diamonds) chi-LNPs and (green circles) GOx-chi-LNPs. The mean values ± SD (n = 3) of the particle diameter and ζ-potential results in a, b are given in Supplementary Table 2. c SEM image of GOx-chi-LNPs. d Thermal stability of (blue circles) free and (red squares) immobilized GOx. Mean values ± SD (n = 3) are shown.