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Ultrasound-assisted extraction and bioaccessibility of saponins from edible seeds: quinoa, lentil, fenugreek, soybean and lupin

Author
Navarro del Hierro, Joaquínuntranslated; Herrera, Teresa; García-Risco, Mónica R.; Fornari, Tiziana; Reglero, Guillermo; Martin, Diana
Entity
UAM. Departamento de Química Física Aplicada
Publisher
Elsevier
Date
2018-07-01
Citation
10.1016/j.foodres.2018.04.058
Food Research International 109 (2018): 440-447
 
 
 
ISSN
0963-9969 (print); 1873-7145 (online)
DOI
10.1016/j.foodres.2018.04.058
Funded by
This work was supported by the Ministerio de Economía y Competitividad, Spain (AGL2016-76736-C3-1-R) and the Community ofMadrid, Spain (ALIBIRD-CM S2013/ABI-2728). Joaquín Navarro del Hierro thanks the Ministerio de Educación, Cultura y Deporte forfunding his research with a FPU predoctoral contract (FPU 15/04236).Teresa Herrera thanks the Community of Madrid for her contract (Fondo Social Europeo, Programa Operativo de Empleo Juvenil eIniciativa de Empleo Juvenil YEI)
Project
Gobierno de España. AGL2016-76736-C3-1-R; Comunidad de Madrid. S2013/ABI-2728/ALIBIRD
Editor's Version
https://doi.org/10.1016/j.foodres.2018.04.058
Subjects
Bioaccessibility; Edible seeds; Gastrointestinal digestion; Legumes; Lipids; Polyphenols; Saponins; Ultrasound-assisted extraction; Ciencia y Tecnología de Alimentos; Química
URI
http://hdl.handle.net/10486/687522
Note
This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period
Rights
© 2018 Elsevier Ltd

Licencia de Creative Commons
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.

Abstract

The efficient production of saponin-rich extracts is of increasing interest due to the bioactive properties that have being demonstrated for these compounds. However, saponins have a poor bioavailability. In this respect, the knowledge about the bioaccessibility of saponins as a first step before bioavailability has been scarcely explored. In this study, the production of ultrasound-assisted extracts of saponins from edible seeds (quinoa, soybean, red lentil, fenugreek and lupin) was carried out with ethanol, ethanol:water or water. Extraction yield, total saponin (TSC), fat and total phenolics content (TPC) were determined. Then, the bioaccessibility of saponins after the in vitro gastrointestinal digestion of the extracts was determined and the effect of TPC and fat in the extracts on bioaccessibility was evaluated. The highest saponin-rich extracts were obtained by ethanol, being fenugreek and red lentil the richest extracts (12% and 10%, respectively). Saponins from ethanol:water extracts displayed variable bioaccessibility (from 13% for fenugreek to 83% for lentil), but a bioaccessibility closer to 100% was reached for all ethanol extracts. Correlation studies showed that TPC of the extracts negatively affected the bioaccessibility of saponins, whereas fat of the extracts enhanced this parameter. As summary, ultrasound-assisted extraction is shown as an efficient method for obtaining saponin-rich extracts from edible seeds, being ethanol the most advantageous solvent due to the richness of saponins and the successful bioaccessibility from these extracts, likely caused by the co-extracted fat with ethanol. Regardless of the extracts, phenolic compounds or fat may hinder or enhance the bioaccessibility of saponins, respectively. Additionally, an adequate balance between saponins to lipids has shown to be relevant on such an effect
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Google™ Scholar:Navarro del Hierro, Joaquín - Herrera, Teresa - García-Risco, Mónica R. - Fornari, Tiziana - Reglero, Guillermo - Martin, Diana

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  • Producción científica en acceso abierto de la UAM [14677]

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