Lignins from Agroindustrial by-Products as Natural Ingredients for Cosmetics: Chemical Structure and In Vitro Sunscreen and Cytotoxic Activities

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Oihana GordobilJalel Labidi

Abstract

The growing concern about the environmental impact and human health risk related to the excessive use of synthetic ingredients in cosmetics and topical formulations calls for the exploration of safe and sustainable natural alternatives. Lignin-rich lignocellulosic industrial wastes such as hazelnut and walnut shells were used as a lignin polymer source. Agro-derived lignins were evaluated as a potential natural active ingredient for health care products. Aside from the structural characteristics of isolated lignins, which were identified by GPC, Py-GC-MS, and 2D HSQC NMR techniques, functional properties such as antioxidant power and UV absorption ability were investigated. The SPF values found for creams containing 5% of hazelnut and walnut lignin content were 6.9 and 4.5, respectively. Additionally, both lignin types presented appropriate protection against UVA radiation, highly interesting property to block the full ultraviolet spectrum. The biological activity of isolated lignins assessed at different concentrations (0.01-1 mg/mL) and different times (24, 48, and 72 h) on murine fibroblast cell line 3T3 suggested their suitability for cosmetic applications.

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Citations

Jun 27, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Chiara AllegrettiPaola D'Arrigo
Jan 23, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Lady Laura Del Rio OsorioCarlos David Grande-Tovar
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Eduardo RoblesJalel Labidi

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Methods Mentioned

BETA
NMR
Assay

Software Mentioned

Py

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