Revolutionary sunscreen from lignin: A natural and sustainable breakthrough
Innovative research transforms lignin into high-performance sunscreen ingredient
image: Innovative Research Transforms Lignin into High-Performance Sunscreen Ingredient
Credit: Department of Polymeric Materials & Engineering, Guizhou University, Guiyang 550025, China
In a significant advancement for sustainable skincare, researchers at Guizhou University have reported a novel method to molecularly engineer lignin into a high-performance sunscreen ingredient. Lignin, a byproduct of paper-making and biorefining industries, has been traditionally underutilized, often discarded or burned due to its complex molecular structure. However, this new study presents a green strategy to transform lignin into a valuable derivative with robust ultraviolet-absorbing and antioxidant properties.
The researchers used organocatalysis to engineer lignin into a lignin-3-(2-hydroxyphenyl)propionate ester (LPPE) derivative. This process involved a transesterification reaction between 3,4-dihydrocoumarin (DHC) and the aliphatic hydroxyls in lignin. The newly synthesized LPPE demonstrated a significant increase in phenolic hydroxyl groups, which are responsible for its enhanced UV-absorbing and antioxidant capabilities.
The study's findings indicated that the LPPE exhibited excellent ultraviolet-absorbing and antioxidant performance, with up to 90% free radical scavenging activity within 20 minutes using 5 mg/mL of LPPE. Moreover, when incorporated into sunscreen cream at a 5% dosage, it achieved a high Sun Protection Factor (SPF) value of 40.9, underscoring its significant application potential in sunscreen products.
This innovative research not only provides a sustainable solution for the valorization of lignin but also contributes to the development of eco-friendly and high-performance sunscreen ingredients. The use of biomass-derived materials in sunscreens could potentially replace synthetic UV-blocking ingredients, offering a healthier and more environmentally friendly option for consumers.
The study by Guizhou University represents a significant step forward in the utilization of lignin for high-value applications. The transformation of lignin into a potent sunscreen ingredient could revolutionize the skincare industry by offering a natural and sustainable alternative to synthetic ingredients. Future research and development in this area could pave the way for a new generation of eco-friendly sunscreen products.
See the article:
DOI
https://doi.org/10.1016/j.jobab.2024.03.003
Original Source URL
https://www.sciencedirect.com/science/article/pii/S2369969824000203
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