Designing natural deep eutectic solvents for extraction of phenolic compounds and antioxidant application: A case study with diverse thai rice bran varieties

Siripattanakulkajorn Chatchai, Sombutsuwan Piraporn, Villeneuve Pierre, Barea Bruno, Aryusuk Kornkanok, Durand Erwann. 2024. Designing natural deep eutectic solvents for extraction of phenolic compounds and antioxidant application: A case study with diverse thai rice bran varieties. ACS Food Science and Technology, 4 (10) : 2462-2473.

Résumé : Green solvents, like natural deep eutectic solvents (NaDES) derived from biobased molecules, are gaining prominence over conventional solvents due to their eco-friendly, less toxic, biodegradable, and cost-effective attributes. This study focuses on NaDES derived from food-grade compounds for extracting phenolic compounds and anthocyanins from different rice bran types, comparing them with ethanol and 10% acidic water. NaDES formulations displayed superior extraction efficiency for both phenolic compounds and anthocyanins in bound and free forms. Notably, the betaine/sucrose/water NaDES extracted the highest antioxidant compounds from the Niaw Dum Mor variety, showing 7 times higher antioxidant activity than ethanol in (2,2)-diphenyl-1-picrylhydrazyl assays and 2.5 times higher in oil-in-water emulsion systems. This study highlights the effectiveness of betaine-based NaDES with sucrose in extracting phenolic compounds, offering a sustainable approach for future antioxidant extract formulations.

Mots-clés Agrovoc : antioxydant, composé phénolique, Oryza sativa, extraction par solvant, son de riz, anthocyane, solvant

Mots-clés géographiques Agrovoc : Thaïlande

Mots-clés libres : Anthocyanin, Antioxidant activity, Extraction, Natural deep eutectic solvent (NaDES), Phenolic compounds, Rice bran (RB), Rice varieties

Agences de financement hors UE : Thailand Research Fund, Thailand Science Research and Innovation, National Research Council of Thailand

Auteurs et affiliations

• Siripattanakulkajorn Chatchai, CIRAD-PERSYST-UMR Qualisud (FRA)
• Sombutsuwan Piraporn, KMUTT (THA)
• Villeneuve Pierre, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0003-1685-1494
• Barea Bruno, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0009-0007-5164-1632
• Aryusuk Kornkanok, KMUTT (THA) - auteur correspondant
• Durand Erwann, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-0306-8081 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/612934/)

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