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All Journal Biology, Medicine, & Natural Product Chemistry
Salsabila S., Nanda Aurelia
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Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology Public Health

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Sustainable Valorization of Corncob Residues through Green Lignin Extraction for Functional Sunscreen Applications Pambudi, Teguh; Umam, Hilman Imadul; Rachmawati Putri, Fajar Amelia; Zuhri, Alifa Rahma; Salsabila S., Nanda Aurelia; Halimah, Melisa Nur; Bruning, Sheryl Ayesha; Vioniken, Elzandra Imola
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.119-125

Abstract

Corncob residues represent an abundant agricultural biomass rich in cellulose, hemicellulose, and lignin. Lignin, an aromatic biopolymer containing benzene and ketone functional groups, exhibits inherent ultraviolet (UV) absorption, positioning it as a promising bio-based ingredient for sustainable sunscreen formulations. In this study, lignin was extracted from corncob residues—comprising 18.5% hemicellulose, 23.5% cellulose, and 16.5% lignin—using a green deep eutectic solvent (DES) system composed of choline chloride and citric acid, and benchmarked against conventional alkaline extraction using NaOH. FTIR analysis revealed attenuated peak intensities in DES-extracted lignin, indicating lower recovery and partial structural alteration relative to the NaOH-derived counterpart. Extraction yields were 10.06% for the DES method and 16.19% for the NaOH method. Sunscreen formulations containing 2%, 3%, and 4% lignin exhibited appreciable UV absorption, particularly within the UVA region, with the highest performance observed at 4% lignin loading. These results highlight the feasibility of valorizing corncob biomass through environmentally benign lignin extraction to produce functional bio-based materials for sustainable sunscreen applications.
Co-Authors Bruning, Sheryl Ayesha Halimah, Melisa Nur Rachmawati Putri, Fajar Amelia Teguh Pambudi, Teguh Vioniken, Elzandra Imola Zuhri, Alifa Rahma