Title:
The Potential Use of Cashew Apple Lignin as Photoprotector Ingredient for Cosmetics
Author(s):
Rodrigues, T.H.S., Matias, G.A.B., Mattos, A.L.A., Rosa, M.F., Rocha, M.V.P.
Document(s):
Paper
Poster
Abstract:
Prolonged exposure to ultraviolet (UV) radiation causes damage to the skin and immune system. Therefore, enormous efforts have been made to develop biodegradable and sustainable UV protective materials. The high presence of phenolic groups makes lignin a promising candidate for natural UV protective material. Then, this study aimed to use lignin from cashew apple bagasse (CAB) to produce hybrid nanocomposites with zinc and titanium oxides to evaluate antioxidant and UVA/UVB properties. The yields of lignin-based nanocomposites were similar, 37.2 ± 1.3% for LigZnO and 34.3 ± 2.2% for LigTiO2. The size was at nanoscale, 789 ± 12 nm and 864 ± 17 nm for LigTiO2 and LigZnO, respectively; also being stable according to zeta potential (|-32 mV| to |-48 mV|). FTIR analyzes show the presence of interactions between lignin and zinc or titanium oxides, being both nanocomposites. Lignin from CAB showed a high antioxidant (94.5 ± 0.9%) potential while the nanocomposites showed similar scavenging effect (~30%). Lignin-based nanocomposites present better photoprotection in the UVA region (UVA/UVB ratio of 2.4), and higher than lignin (1.8). Then, lignin nanocomposites appear as a promisse UV absorber for cosmetics which contributes to value-added nanomaterials production, and helps to mitigate the agro-waste disposal problems.
Keywords:
agricultural residues, lignin, sustainability, biobased products
Topic:
Biomass Conversion to Bio-based Products and Chemicals
Subtopic:
Processes for bio-based chemicals and materials
Event:
32nd European Biomass Conference and Exhibition
Session:
6BV.2.9
Pages:
821 - 823
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-6BV.2.9
Price:
FREE
