odified lignin from sugarcane bagasse as an emulsifier in oil-in-water nanoemulsion

Author(s)

Brenelli, Livia Beatriz ^{[1, 2]} ; Mariutti, Lilian Regina Barros ^[3] ; Portugal, Rodrigo Villares ^[4] ; de Farias, Marcelo Alexandre ^[4] ; Bragagnolo, Neura ^[3] ; Mercadante, Adriana Zerlotti ^[3] ; Franco, Telma Teixeira ^{[5, 1]} ; Rabelo, Sarita Candida ^[6] ; Squina, Fabio Marcio ^[7]

Affiliation

^[1] Univ Campinas UNICAMP, Interdisciplinary Ctr Energy Planning, Campinas, SP - Brazil

^[2] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, Campinas, SP - Brazil

^[3] Univ Campinas UNICAMP, Fac Food Engn, Campinas, SP - Brazil

^[4] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Campinas, SP - Brazil

^[5] Univ Campinas UNICAMP, Sch Chem Engn, Campinas, SP - Brazil

^[6] Sao Paulo State Univ UNESP, Dept Bioproc & Biotechnol, Coll Agr Sci, Sao Paulo - Brazil

^[7] Univ Sorocaba, Programa Proc Tecnol & Ambientais, Sorocaba, SP - Brazil

• Document type: Journal article
• Source: INDUSTRIAL CROPS AND PRODUCTS; v. 167, SEP 1 2021.
• Web of Science Citations: 1

Abstract

Lignin from pre-treated sugarcane bagasse was sulfomethylated to overcome its high hydrophobicity (Lig-S) and tested at different concentrations as an emulsifier for stabilizing oil-in-water nanoemulsions. The average diameter of the oil droplets was higher in the nanoemulsion prepared with 0.1 % (w/w) Lig-S (-380 nm) than those prepared with 0.5 and 1.0 % (w/w) (-180 nm and -170 nm, respectively). Zeta potential measurements predicted the long-term stability of Lig-S nanoemulsion. GC-MS analysis of the volatile carbon compounds derived from the oxidation of soybean oil indicated the highest oxidation rates were in preparations with the smallest droplet size. However, all the Lig-S nanoemulsions showed oxidation rates below the threshold values described in the literature. Microscopy analysis confirmed that all the preparations nanosized, dispersed spherical droplets. Collectively, this study has demonstrated that modified lignin isolated from sugarcane bagasse is an excellent emulsifier for the production of oil-in-water nanoemulsions that have both high physical and oxidative stability, providing prospects for the development of nanosystems, based on sustainable strategies, that can be explored for applications such as entrapment and delivery of hydrophobic or bioactive molecules. (AU)

• FAPESP's process: 13/03061-0 - Characterization and antioxidant capacity of fractions of lignin extracted from sugarcane bagasse
• Grantee: Lívia Beatriz Brenelli de Paiva
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 20/05784-3 - EMU approved in grant 15 / 50590-4: chromatographic system and detectors for analysis of sugars and lignocellulosic monolignols
• Grantee: Fábio Márcio Squina
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 15/50612-8 - An integrated approach to explore a novel paradigm for biofuel production from lignocellulosic feedstocks
• Grantee: Telma Teixeira Franco
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 15/50590-4 - Lignin valorization in cellulosic ethanol plants: biocatalytic conversion via ferulic acid to high value chemicals
• Grantee: Fábio Márcio Squina
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants