Work

Choline chloride-based solvents as alternative media for alginate extraction from brown seaweed

Year: 2024

Type: article

Abstract: This study demonstrated an effective method for extracting alginate from the brown seaweed Ascophyllum nodosum using deep eutectic solvents (DES), achieving a higher yield than traditional alkaline extraction methods. Eight choline chloride-based DESs were tested, with DES ChCl:Urea (1:2) yielding the most alginate. The extraction conditions were optimized using response surface methodology (RSM), which identified the biomass to liquid ratio as the most significant factor influencing extraction efficiency. The optimized parameters resulted in a 74% extraction efficiency of alginate. Characterisation through FT-IR and size exclusion chromatography showed that the extracted alginate was comparable to that obtained via the conventional alkaline extraction method. Overall, DES extraction offers a more efficient and sustainable alternative to conventional methods, which typically extract only 10%–24.5% of total alginate.

Source: LWT

DOI: 10.1016/j.lwt.2024.117174

Authors: Isa S.A. Hiemstra, Jenne T. Meinema, Michel M.H. Eppink, René H. Wijffels, Antoinette Kazbar

Language: English

Topic: Seaweed-derived Bioactive Compounds

Subfield: Aquatic Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,570

Funders: Royal Society of Medicine, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Anova Health Institute