Dietary Fiber from Tunisian Common Date Cultivars (Phoenix dactylifera L.): Chemical Composition, Functional Properties, and Antioxidant Capacity
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- 作者：Abdessalem Mrabet ; Roc铆o Rodr铆guez-Arcos ; Rafael Guill茅n-Bejarano ; Nizar Chaira ; Ali Ferchichi ; Ana Jim茅nez-Araujo
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2012
- 出版时间：April 11, 2012
- 年：2012
- 卷：60
- 期：14
- 页码：3658-3664
- 全文大小：234K
- 年卷期：v.60,no.14(April 11, 2012)
- ISSN：1520-5118
文摘
The dietary fibers (DF) of 10 date varieties from Tunisian oases have been investigated. Further knowledge on the content, composition, and technological applications of those fibers could support their genetic variability and promote the socioeconomical development of growing areas. The composition, water- and oil-holding capacities, solubility, and antiradical activity have been determined. The DF content ranged from 4.7% (Matteta, Rochdi) to >7% (Degl茅 Nour, Garen Gaze, Smeti). Composition varied significantly among cultivars, and the results evidenced that uronic acids and lignin determine to a great extent the organoleptic quality of dates. Many of the varieties that have been studied (Garen Gaze, Matteta, Kenta, Rochdi, Mermella, Korkobbi, Eguwa) were selected because of great interest from technological and functional points of view. Among their physicochemical characteristics, these samples presented water- and oil-holding capacities of higher than 17 and 4 mL/g fiber, respectively, which make them suitable for use as additives in fiber-enriched foods. Also, DF of Garen Gaze, Smeti, Mermella, and Eguwa had a high antiradical capacity (>230 Trolox equiv/kg fiber). It was concluded that some of these varieties could be grown as potential sources of DF, which could be included in the formulation of fiber- and antioxidant-enriched foods.