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Título: | Antioxidant Capacity and Phenolic and Sugar Profiles of Date Fruits Extracts from Six Different Algerian Cultivars as Influenced by Ripening Stages and Extraction Systems |
Autor: | Tassoult, Malika; Edine Kati, Djamel; Fernández-Prior, África CSIC ORCID; Bermúdez-Oria, Alejandra CSIC ORCID; Fernández-Bolaños Guzmán, Juan CSIC ORCID ; Rodríguez-Gutiérrez, Guillermo CSIC ORCID | Palabras clave: | Phoenix dactylifera L. Secondary dates Phenolic profile Antioxidant activity Sugars |
Fecha de publicación: | 26-feb-2021 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Foods 10 (3): 503 (2021) | Resumen: | The study investigated the phenols, sugar and the antioxidant capacities of date fruit extracts obtained by organic solvents and by hydrothermal treatment from six different Algerian cultivars at two ripening stages for the first time. The analyzed cultivars exhibited potent antioxidant properties (ferric reducing antioxidant power (FRAP), 1,1-Diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) scavenging capacities) and different phenols regardless of the solvents and the maturity stages. About 18 phenols were identified and quantified, mainly in the hydrothermal extracts. The earlier stages were characterized by high amounts of o-coumaric acid, cinnamic acid and luteolin, with a noticeable absence of quercetin. The tamr stage presented the highest sugar content (78.15–86.85 mg/100 mg dry weight (DW)) with an abundance of glucose. Galactose was present only in some cultivars from the kimri stage (tamjouhert). Uronic acids were mostly detected at the tamr stage (4.02–8.82 mg gallic acid equivalent/100 mg dried weight). The obtained results highlight the potential of using date fruit extracts as natural antioxidants, especially at industrial scales that tend use hydrothermal extraction. | Descripción: | 16 Páginas.-- 4 Figuras.-- 3 Tablas | Versión del editor: | http://dx.doi.org/10.3390/foods10030503 | URI: | http://hdl.handle.net/10261/237222 | E-ISSN: | 2304-8158 |
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