Sequential one-pot NaDES assisted extraction and biotransformation of rice bran: A new strategy to boost antioxidant activity of natural extracts

Barros Santos Millena, Barouh Nathalie, Baréa Bruno, Villeneuve Pierre, Bourlieu-Lacanal Claire, Larraz Ferreira Mariana Simões, Durand Erwann. 2022. Sequential one-pot NaDES assisted extraction and biotransformation of rice bran: A new strategy to boost antioxidant activity of natural extracts. Process Biochemistry (1991), 117 : 110-116.

Résumé : Natural Deep Eutectic solvents (NaDES) was used to produce, after sequential one-pot extraction and biotransformation of naturally pigmented rice bran (RB), ready-to-use extracts that improve the oxidative stability of lipids in an oil-in-water emulsion. Two NaDES-based strategies were implemented. Extraction of phenolics content varied according to the NaDES. The shiftable NaDES (obtained from the acidic-NaDES based on ChCl and xylitol) stands out by showing content of 1525 mg eq gallic acid/100 g RB. The sequential one-pot biotransformation with immobilized Candida antarctica lipase B after increasing pH, was marked by a decrease in phenolics content and a lipids profile variation. These enriched extracts could be used as natural additives or ready-to-use extracts, as confirmed by the encouraging antioxidant results observed in emulsion. Omics tools should be applied to elucidate the structural rearrangement between compounds and the pool of extracted antioxidant molecules that may explain the protection against lipid oxidation.

Mots-clés Agrovoc : son de riz, solvant, antioxydant, activité enzymatique, lipase, efficacité d'utilisation, efficacité conversion alimentaire

Mots-clés complémentaires : solvant eutectique profond naturel

Mots-clés libres : Riz, Antioxidant, NaDES

Classification Agris : Q02 - Traitement et conservation des produits alimentaires

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Agences de financement hors UE : Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal do Estado do Rio de Janeiro, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Auteurs et affiliations

• Barros Santos Millena, UFRJ (BRA)
• Barouh Nathalie, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0001-6956-1349
• Baréa Bruno, CIRAD-PERSYST-UMR Qualisud (FRA)
• Villeneuve Pierre, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0003-1685-1494
• Bourlieu-Lacanal Claire, CIRAD-PERSYST-UMR Qualisud (FRA)
• Larraz Ferreira Mariana Simões, UNIRIO (BRA) - auteur correspondant
• Durand Erwann, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-0306-8081 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/600982/)

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