Male date palm flowers: Valuable nutritional food ingredients and alternative antioxidant source and antimicrobial agent

Karra, S.; Sebii, H.; Jardak, M.; Bouaziz, M. A.; Attia, H.; Blecker, Christophe; Besbes, S.

doi:10.1016/j.sajb.2020.02.010

Article (Scientific journals)

Male date palm flowers: Valuable nutritional food ingredients and alternative antioxidant source and antimicrobial agent

Karra, S.; Sebii, H.; Jardak, M. et al.

2020 • In South African Journal of Botany, 131, p. 181-187

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/248564

DOI
10.1016/j.sajb.2020.02.010

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Keywords :

Amino acids; Antimicrobial activity; Antioxidant activity; Bioactive compounds; Male date palm flowers; Minerals; Nutrition; Phoenix dactylifera

Abstract :

[en] The aim of this study was to assess the nutritional properties of male date palm flower (MDPF) via determining its mineral, amino acid and bioactive compounds profiles and to investigate its antioxidant and antibacterial activities in order to prove its possible use as a healthy and potential natural source in human dietary diets. Results showed that MDPF is an excellent source of minerals especially regarding its high potassium and phosphorus contents (2684.23 and 318.66 mg/100 g, respectively). Moreover, the amino acids profile of MDPF showed considerable amounts supplying the human requirements. The phytochemical compounds analysis showed high content of polyphenol and flavonoids (3829.22 mg EAG/100 g and 168.31 mg EQ/100 g, respectively) promoting high antioxidant activity. The quantitative and qualitative analysis (LC-ESI-MS) of phenolic acids and flavonoids led to the identification of 18 phenolic compounds that were dominated by quinic acid (84.52%). The MDPF extract showed a potential antioxidant activity determined by different tests, namely DPPH radicals scavenging activity, ferric reducing power assay, ferrous ion chelating capacity and β-carotene bleaching assay. The MDPF also exhibited significant antibacterial activity against some tested bacteria. In conclusion, owing to its nutritional profile and biological activities, MDPF could be considered as potential functional-ingredient for food applications. © 2020 SAAB

Disciplines :

Food science

Author, co-author :

Karra, S.; Laboratory of Analysis Valorisation and Food Safety, Department of Biology, National School of Engineers of Sfax, University of Sfax, Soukra Road, Sfax, 3038, Tunisia

Sebii, H.; Laboratory of Analysis Valorisation and Food Safety, Department of Biology, National School of Engineers of Sfax, University of Sfax, Soukra Road, Sfax, 3038, Tunisia

Jardak, M.; Laboratory of Molecular and Cellular Screening Processes, Centre of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road Km 6, Sfax, 3018, Tunisia

Bouaziz, M. A.; Laboratory of Analysis Valorisation and Food Safety, Department of Biology, National School of Engineers of Sfax, University of Sfax, Soukra Road, Sfax, 3038, Tunisia

Attia, H.; Laboratory of Analysis Valorisation and Food Safety, Department of Biology, National School of Engineers of Sfax, University of Sfax, Soukra Road, Sfax, 3038, Tunisia

Blecker, Christophe ; Université de Liège - ULiège > Département GxABT > SMARTECH

Besbes, S.; Laboratory of Analysis Valorisation and Food Safety, Department of Biology, National School of Engineers of Sfax, University of Sfax, Soukra Road, Sfax, 3038, Tunisia, Laboratory of Food Science and Formulation, Faculty of Gembloux Agro-Bio Tech, University of Liège, Avenue de la faculté 2-B, Gembloux, 5030, Belgium

Title :

Male date palm flowers: Valuable nutritional food ingredients and alternative antioxidant source and antimicrobial agent

Publication date :

2020

Journal title :

South African Journal of Botany

ISSN :

0254-6299

Publisher :

Elsevier B.V.

Volume :

131

Pages :

181-187

Peer reviewed :

Peer Reviewed verified by ORBi

Funders :

Ministry of Higher Education and Scientific Research, MHE&SRWallonie-Bruxelles International, WBI

Available on ORBi :

since 16 June 2020

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