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Review
. 2021 Feb 10;10(2):274.
doi: 10.3390/antiox10020274.

Nano-Structured Lignin as Green Antioxidant and UV Shielding Ingredient for Sunscreen Applications

Davide Piccinino  1 , Eliana Capecchi  1 , Elisabetta Tomaino  1 , Sofia Gabellone  1 , Valeria Gigli  1 , Daniele Avitabile  2 , Raffaele Saladino  1
Affiliations
Review

Nano-Structured Lignin as Green Antioxidant and UV Shielding Ingredient for Sunscreen Applications

Davide Piccinino et al. Antioxidants (Basel). .

Abstract

Green, biocompatible, and biodegradable antioxidants represent a milestone in cosmetic and cosmeceutical applications. Lignin is the most abundant polyphenol in nature, recovered as a low-cost waste from the pulp and paper industry and biorefinery. This polymer is characterized by beneficial physical and chemical properties which are improved at the nanoscale level due to the emergence of antioxidant and UV shielding activities. Here we review the use of lignin nanoparticles in cosmetic and cosmeceutical applications, focusing on sunscreen and antiaging formulations. Advances in the technology for the preparation of lignin nanoparticles are described highlighting structure activity relationships.

Keywords: Lignin nanoparticles; UV shielding activity; antioxidant activity; cosmetic and cosmeceutical applications; sunscreen formulations.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Schematic representation of photodegradation processes operative in the case of avobenzone (AVOB) (A) and octyl methoxycinnamate (OCM) (B).
Figure 2
Figure 2
Chemical structure of the main components in lignin. (A) Monolignols; (B) representation of the main type of inter-units in lignin.
Figure 3
Figure 3
Classification and structural representation of lignin sub-units with antioxidant activity and chromophoric groups.
Figure 4
Figure 4
UV-VIS assay to evidence of bathochromic effect of organosolv lignin nanoparticles (OLNPs; green line) after the nanostructuration of starting technical organosolv lignin (OL; red line).
See this image and copyright information in PMC

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