1. Metabolomics of Pigmented Rice Coproducts Applying Conventional or Deep Eutectic Extraction Solvents Reveal a Potential Antioxidant Source for Human Nutrition
- Author
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Santos, Millena Cristina Barros, Barouh, Nathalie, Durand, Erwann, Baréa, Bruno, Robert, Mélina, Micard, Valérie, Lullien-Pellerin, Valérie, Villeneuve, Pierre, Cameron, Luiz Claudio, Ryan, Elizabeth P., Ferreira, Mariana Simões Larraz, Bourlieu-Lacanal, Claire, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Colorado State University [Fort Collins] (CSU), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, code 001), Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ, 26/010.100988/2018, 26/202/709–2018, 26/201.848/2019) and National Council for Scientific Technological Development (CNPq) (310343/2019-4), Foundation for Research Support of State of Rio de Janeiro (FAPERJ) (26/010.100.988/2018, 26/202.709/2018, 26/201.848/2019), National Council for Scientific and Technological Development (CNPq) (427.116/2018, 310.34/2019-4), UNIRIO, and TRANSFORM INRAE (FRANCE) department.
- Subjects
S01 - Nutrition humaine - Considérations générales ,Polyphénol ,antioxidant ,lcsh:QR1-502 ,Oryza sativa ,phenolic compounds ,lcsh:Microbiology ,Article ,Q02 - Traitement et conservation des produits alimentaires ,pigmented rice bran ,[SDV.IDA]Life Sciences [q-bio]/Food engineering ,UPLC-MSE ,Nutrition humaine ,son de riz ,Antioxydant ,green solvent ,metabolomics ,Extraction par solvant ,[SDV.AEN]Life Sciences [q-bio]/Food and Nutrition - Abstract
International audience; Rice bran (RB) corresponds to the outer layers of whole grain rice and contains several phenolic compounds (PCs) that make it an interesting functional food ingredient. PC richness is enhanced in pigmented RB varieties and requires effective ways of extraction of these compounds. Therefore, we investigated conventional and deep eutectic solvents (DES) extraction methods to recover a wide array of PCs from red and black RB. The RB were extracted with ethanol/water (60:40, v/v) and two DES (choline chloride/1.2-propanediol/water, 1:1:1 and choline chloride/lactic acid, 1:10, mole ratios), based on Generally Recognized as Safe (GRAS) components. Besides the quantification of the most typical phenolic acids of cereals, nontargeted metabolomic approaches were applied to PCs profiling in the extracts. Globally, metabolomics revealed 89 PCs belonging to flavonoids (52%), phenolic acids (33%), other polyphenols (8%), lignans (6%) and stilbenes (1%) classes. All extracts, whatever the solvents, were highly concentrated in the main phenolic acids found in cereals (37–66 mg/100 g in black RB extracts vs. 6–20 mg/100 g in red RB extracts). However, the PC profile was highly dependent on the extraction solvent and specific PCs were extracted using the acidic DES. The PC-enriched DES extracts demonstrated interesting DPPH scavenging activity, which makes them candidates for novel antioxidant formulations.
- Published
- 2020
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