title: Phytochemical content and antioxidant properties of diverse varieties of whole barley (Hordeum vulgare L.) grown in Tunisia.
abstract: Four varieties (Rihane, Manel, Roho, and Tej) of Tunisian barley were analysed for their antioxidant activities (AA) using ABTS and DPPH radicals cation, and ferric reducing/antioxidant power (FRAP) methods. The total phenolic (TPC), total flavonoid (TFC) and condensed tannins (CTC) contents were measured. The results indicated that the total phenolic contents ranged from 195.02 ± 0.32 to 220.11 ± 0.32 mg gallic acid equivalent/100g fresh weight. Results showed that Rihane has the highest TPC, TFC and CTC compared to other varieties. Roho barley had a lower activity than Tej barley. A significant correlation (p<0.05) was found between TPC, TFC, CTC and AA. This study suggests that Tunisian barley varieties may serve as a good source of natural antioxidants.
authors.affiliation: Unité de Recherche 03/UR/09-01 «Génome, Diagnostic Immunitaire et Valorisation», Institut Supérieur de Biotechnologie de Monastir, Avenue Tahar Hadded, BP 74, 5000, Université de Monastir, Monastir, Tunisia.. Electronic address: lahouarlamia@yahoo.fr.
authors.forename: Lamia
authors.initials: L
authors.lastname: Lahouar
authors.forename: Amira
authors.initials: A
authors.lastname: El Arem
authors.forename: Fatma
authors.initials: F
authors.lastname: Ghrairi
authors.forename: Hassiba
authors.initials: H
authors.lastname: Chahdoura
authors.forename: Hichem
authors.initials: H
authors.lastname: Ben Salem
authors.forename: Mouledi
authors.initials: M
authors.lastname: El Felah
authors.forename: Lotfi
authors.initials: L
authors.lastname: Achour
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D052160:Benzothiazoles / Q000032:analysis; D005419:Flavonoids / Q000032:analysis; D001467:Hordeum / Q000737:chemistry* / Q000145:classification*; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis; D064209:Phytochemicals / Q000032:analysis*; D013451:Sulfonic Acids / Q000032:analysis; D013634:Tannins / Q000032:analysis; D014416:Tunisia
chemical_list: D000975:Antioxidants; D052160:Benzothiazoles; D005419:Flavonoids; D010636:Phenols; D064209:Phytochemicals; D013451:Sulfonic Acids; D013634:Tannins; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid
keywords: Antioxidant activities; Total phenolic content; Tunisian barley varieties