Comparative antioxidant activity of nanoscale lignin prepared by a supercritical antisolvent (SAS) process with non-nanoscale lignin

Spherical lignin particles: a review on their sustainability and applications

“…(b) Effect of the nanoscale on the light absorption of the lignin particles. 168 (c) Oxidation of lignin particles induced by enzymes. 169 (d) Effect of pH on the stability, as far as hydrodynamic diameter, of irregular and spherical-shaped lignin nanoparticles.…”

From lignin association to nano-/micro-particle preparation: extracting higher value of lignin

“…However, the lack of well-defined structures of lignin poses a serious challenge for medical applications. Lignin nanoparticles (including capsules and tubes) have been prepared by anti-solvent precipitation, 25,26,53,54 self-assembly, 55,56 interfacial polymerization/crosslinking, 13,19 using nanopore alumina membranes as a template, 57 mechanical shearing 24 and sonication. 58 A survey of literature studies of lignin nanoparticles is summarized in Table 2.…”

Preparation and characterisation of lignin nanoparticles: evaluation of their potential as antioxidants and UV protectants

“…Nanoscale lignin prepared by supercritical antisolvent process was shown to possess enhanced antioxidant activity when compared to non-nanoscale lignin, due to their high surface-area-to-volume ratio with reference to their parent polymers. [19] The antioxidant and UV protectant properties of lignin are dependent on its genetic origin and method of isolation. Therefore, in the present study, dioxane lignin nanoparticles (DLNP) and alkali lignin nanoparticles (ALNP) were fabricated from two distinct sources of lignin, i.e., hardwood dioxane lignin (DL) and softwood alkali lignin (AL), isolated by different methods.…”