title: Phenolic composition, ascorbic acid content, and antioxidant capacity of Spanish jujube (Ziziphus jujube Mill.) fruits.
abstract: The interest in Ziziphus jujube is growing because it is an excellent source of nutrients and phytochemicals, and can contribute to a healthy diet. Nutritional compounds (phenolic compounds and L-ascorbic acid), and antioxidant capacity of 4 Spanish jujube cultivars were studied. Polyphenols were identified by LC-MS-QTof and quantified by UPLC-PDA-FL. A total of 25 polyphenolic compounds were identified and classified as 10 flavan-3-ols, 13 flavonols, 1 flavanone, and 1 dihydrochalcone. The content of total polyphenols (TP) ranged from 1442 to 3432 mg/100 g dry matter (dm) in fruits of the cultivars 'DAT' and 'PSI', respectively. Flavan-3-ols, the major group of polyphenols in jujube represented ∼92% of the TP content, whereas flavonols only amounted for about ∼8% each. The content of L-ascorbic acid was very high and took values in the range of 387-555 mg/100 g fresh weight (fw). Some Spanish jujube cultivars, especially 'PSI' and 'MSI', may be selected to promote the growth of cultivars with valuable nutritional and phytochemical beneficial effects on human health.
authors: Department of Fruit and Vegetable Processing, Wroclaw University of Environmental and Life Science, 37 Chełmońskiego Street, 51-630 Wroclaw, Poland. Electronic address: aneta.wojdylo@up.wroc.pl.
authors: Aneta
authors: A
authors: Wojdyło
authors: Department of Agro Food Technology, Food Quality and Safety Group, Universidad Miguel Hernández de Elche, Ctra.de Beniel, km 3.2, 03312 Orihuela, Alicante, Spain.
authors: Ángel A
authors: ÁA
authors: Carbonell-Barrachina
authors: Department of Plant Sciences and Microbiology, Plant Production and Technology Group, Miguel Hernández University de Elche, Ctra.de Beniel, km 3.2, 03312 Orihuela, Alicante, Spain.
authors: Pilar
authors: P
authors: Legua
authors: Department of Plant Sciences and Microbiology, Plant Production and Technology Group, Miguel Hernández University de Elche, Ctra.de Beniel, km 3.2, 03312 Orihuela, Alicante, Spain.
authors: Francisca
authors: F
authors: Hernández
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D001205:Ascorbic Acid / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D006801:Humans; D010636:Phenols / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry*; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts; D001205:Ascorbic Acid
keywords: ABTS; DP; FRAP; Flavan-3-ols; LC–MS–QTof; Polyphenols; UPLC–PDA–FL