Physico-chemical properties and DPPH-ABTS scavenging activity of some local pomegranate (Punica granatum) ecotypes.
Peels and fresh pomegranate extracts were used in the present study for the determination of the physic-chemical properties and DPPH-ABTS scavenging activities. Total sugars of juice are fructose (ca. 7 g/100 ml) and glucose (ca. 8 g/100 ml). Contents of soluble proteins in juice extracts are about 7 g/l (Bradford assays) and 22% (Kjeldhal assays) from dry pulp. Minerals in peel and juice are respectively 9.43+/-0.93 and 9.46+/-1.05 mg/100 ml for posphorus and 210.86+/-10.70 and 271.94+/-60.59 mg/100 g for potassium. The sodium contents are nearly 7 mg/100 ml in both peel and juice. Highly antioxidant contents in peels were confirmed. Free radical scavenging is about 3.58+/-0.38 microg/ml in peel. The antioxidant capacity value determined by ABTS was 7.364+/-0.403 mM Trolox equivalent antioxidant capacity/100 g dry weight. These findings implied that bio-active compounds from the peel might be potential resources for the development of antioxidant function dietary food.
Elfalleh
Walid
W
Institut des Régions Arides de Médenine, Laboratoire d'Aridoculture et Cultures Oasiennes, Tunisia. walid.elfalleh@fst.rnu.tn
Nasri
Nizar
N
Marzougui
Nidhal
N
Thabti
Ines
I
M'rabet
Abdessalem
A
Yahya
Yassine
Y
Lachiheb
Belgacem
B
Guasmi
Ferdaous
F
Ferchichi
Ali
A
D000975:Antioxidants / Q000032:analysis / Q000494:pharmacology*; D052160:Benzothiazoles; D001713:Biphenyl Compounds / Q000378:metabolism; D004032:Diet; D004044:Dietary Proteins / Q000032:analysis; D019422:Dietary Sucrose / Q000737:chemistry; D060146:Ecotype; D016166:Free Radical Scavengers / Q000494:pharmacology; D005632:Fructose / Q000032:analysis; D005638:Fruit / Q000737:chemistry*; D005947:Glucose / Q000032:analysis; D029561:Lythraceae / Q000737:chemistry* / Q000145:classification; D008903:Minerals / Q000032:analysis; D010851:Picrates / Q000378:metabolism; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D013045:Species Specificity; D013451:Sulfonic Acids / Q000378:metabolism; D013844:Thiazoles / Q000378:metabolism; D014131:Trace Elements / Q000032:analysis
D000975:Antioxidants; D052160:Benzothiazoles; D001713:Biphenyl Compounds; D004044:Dietary Proteins; D019422:Dietary Sucrose; D016166:Free Radical Scavengers; D008903:Minerals; D010851:Picrates; D010936:Plant Extracts; D013451:Sulfonic Acids; D013844:Thiazoles; D014131:Trace Elements; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D005632:Fructose; C004931:1,1-diphenyl-2-picrylhydrazyl; D005947:Glucose