PHYSICAL AND ANTIOXIDANT PROPERTIES OF TWO ALGERIAN DATE FRUIT SPECIES (PHOENIX DACTYLIFERA L. AND PHOENIX CANARIENSIS L.)

Amrane Djouab; Salem Benamara; Hassina Gougam; Hayet Amellal; Karima Hidous

doi:10.9755/ejfa.2015-12-1056

Authors

Amrane Djouab Laboratoire de Recherche Technologie Alimentaire, Faculté des Sciences de l’Ingénieur, Université M’hamed Bougara, Boumerdès 35000, Algérie2Centre de Recherche Scientifique et Technique en Analyses Physico-chimiques (CRAPC), BP 248, Alger 16004, Algé
Salem Benamara Laboratoire de Recherche Technologie Alimentaire, Faculté des Sciences de l’Ingénieur, Université M’hamed Bougara, Boumerdès 35000, Algérie
Hassina Gougam Laboratoire de Recherche Technologie Alimentaire, Faculté des Sciences de l’Ingénieur, Université M’hamed Bougara, Boumerdès 35000, Algérie
Hayet Amellal Département de Biologie, Faculté des Sciences, Université M’hamed Bougara, Boumerdès 35000, Algérie
Karima Hidous Laboratoire de Recherche Technologie Alimentaire, Faculté des Sciences de l’Ingénieur, Université M’hamed Bougara, Boumerdès 35000, Algérie

DOI:

https://doi.org/10.9755/ejfa.2015-12-1056

Keywords:

Antioxidant activity, Date palm fruit, Phoenix canariensis L., Phoenix dactylifera L., Physical properties

Abstract

The present comparative study aimed to investigate for the first time some physical and antioxidant properties of date fruits from Phoenix dactylifera L. (cv. Mech-Degla) (MD) and Phoenix canariensis L. (CRD) palms. The physical properties of whole date fruits and date fruit seeds were analyzed separately. But the antioxidant potential (AP), evaluated throughout total phenolic content (TPC), reducing power (RP) and antiradicalar activity (AA) towards the stable free radical 2,2-Diphenyl-1-picrylhydrazyl (DPPH) were analyzed in different tissues of date fruit fleshes. Results showed that linear dimensions, equivalent diameter, volume, mass, sphericity, surface area, bulk density, porosity, angle of repose and hardness, were statistically different (p<0.05) in the two cases considered (whole fruit and seeds). Globally, canariensis L. red date and its constitutive tissues (peel, yellow and white flesh parts) showed a greater RP and greater 2,2-Diphenyl-1-picrylhydrazyl scavenging effect, compared with tissues of Phoenix dactylifera L. date palm variety. Also, a positive linear correlation of type TPC/RP (R2 =0.983) and TPC/AA (R2 =0.853) was observed. So, the underused Phoenix canariensis L. red date as wild fruit may be employed as natural additive in food and non-food formulations.