| Autor: |
NOUI, Yassine, LOMBARKIA, Ourida ALLOUI, BEKRAR, Amel, CHIBANE, Hayet AMELLAL, LEKBIR, Adel, ABDEDDAIM, Mohamed, FAHLOUL, Djamel, BACHA, Ali |
| Předmět: |
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| Zdroj: |
Annals: Food Science & Technology; 2014, Vol. 15 Issue 2, p276-283, 8p |
| Abstrakt: |
This work aimed to study the morphological and physicochemical characteristics and antioxidant capacity of three cultivars of dates: Mech-Degla, Degla-Beida and Deglet-Nour. Duncan's test (p<0.05), brought out significant differences between the whole weight, the length and the ratio pulp/seed of the three varieties. The physicochemical composition showed the richness of the fruit in total sugars (63.06-69.29% fresh weight), with relatively low moisture content (9.58-11.98 % fresh weight), protein contents ranged between 1.95 and 3.95% and ash varied from 2.14 to 2.50 % of dry matter. The mineral profile of dates showed that potassium is the major component (714.27-897.31 mg/100g dry weight). Significant differences (p<0.05) were observed on dry matter content, pH, reducing sugars, proteins, calcium and copper between the varieties of dates studied. Moreover, dates contain polyphenols varying from 116.74 to 189.60mg of gallic acid equivalents (GAE)/100g fresh weight. Their antioxidant capacity was examined by the radical DPPH (2,2-Diphenyl-1-picrylhydrazyl). It varied between 89.73 and 93.41%. Therefore, dates are considered a good source of natural antioxidants which have benefits to human health. Statically, Pearson correlation (p<0.05) showed there were positive correlation (r=0.51) between total phenolic compounds and antioxidant activity. These results revealed that date fruits have a high nutritional value. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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