Randomized trial demonstrates improved UV protection in cosmetic formulations using lignin nanoparticles, indicating their potential as eco-friendly materials.
Key Points
This research aims to develop lignin nanoparticles from corncob biomass for effective antioxidant and UV protection applications.
Lignin nanoparticles were fabricated using enzymatic lignin from corncob biomass through a solvent-exchange dialysis process.
Antioxidant activities were assessed by measuring the half maximal inhibitory concentration across varying lignin concentrations.
The efficacy of LNPs as UV protectants was tested in cosmetic lotion formulations.
LNPs showed a decrease in half maximal inhibitory concentration from 115.55 μg/mL to 51.80 μg/mL with increased lignin concentration.
UV-B protection rates in the lotion increased from 61.6% to 72.0%, 67.9%, and 71.9% with LNP content of 1%, 5%, and 10%, respectively.
UV-A protection rates improved from 26.4% to 40.8%, 36.3%, and 38.4%, representing increases of 54.8%, 37.6%, and 45.5%.