Evaluation of biochemical parameters, phenolic compounds and antioxidant capacity of some varieties of Phoenix dactylifera L. (Date fruits) to determine the nutritional impact values

2017 ◽  
Vol 10 (2) ◽  
pp. 153-164 ◽  
Author(s):  
Fahad Khalid Aldhafiri
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Biochemical Parameters ◽  
Phoenix Dactylifera ◽  
Phoenix Dactylifera L ◽  
Date Fruits

Proximate Composition and Fruit Weight of Fresh Date Fruits (Phoenix dactylifera L.) Varieties in Wet Season of Nigeria

2015 ◽  
Vol 14 (11) ◽  
pp. 834-836
Author(s):  
S.A. Yahaya ◽  
C.A. Omokhudu ◽  
I.M. Koloce ◽  
A.M. Hamza ◽  
M.A. Abdullahi
Keyword(s):  
Proximate Composition ◽  
Phoenix Dactylifera ◽  
Fruit Weight ◽  
Wet Season ◽  
Phoenix Dactylifera L ◽  
Date Fruits

scholarly journals Aroma characterization of ripe date fruits (Phoenix dactylifera L.) from Algeria

2017 ◽  
Vol 16 (42) ◽  
pp. 2054-2061
Author(s):  
Yamine MEZROUA El ◽  
AGLI AbdelNacer ◽  
FLAMINI Guido ◽  
BOUDALIA Sofiane ◽  
OULAMARA Hayet
Keyword(s):  
Phoenix Dactylifera ◽  
Phoenix Dactylifera L ◽  
Date Fruits

Extraction of Phenolic Compounds of six Algerian date (Phoenix dactylifera L.) cultivars from Ain-Saleh region, using Reflux method and Screening of Antioxidant Activity in vitro

2021 ◽  
pp. 161-167
Author(s):  
Habchi A. ◽  
Dekmouche M. ◽  
Hamia C. ◽  
Saidi M. ◽  
Yousfi M. ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Methanol Extract ◽  
Phoenix Dactylifera ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Phoenix Dactylifera L ◽  
Phenolic And Flavonoid

This study was designed to evaluate the antioxidant activity of phenolic compounds for six cultivars of date from In Saleh region (Phoenix dactylifera L.), which were extracted by reflux with solvents, 80% methanol and 70% aceton after the phenolic and flavonoid content were estimated. The total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were measured using Folin–Ciocalteau and aluminum chloride colorimetric methods, respectively. Antioxidant activity acetone/H2O and methanol/H2O extracts using ABTS, DPPH, FRAP, TAC and CUPRAC assays. The results showed that methanolic solvent reflux gives better yields. The highest level of phenolic compounds for all dates varieties was found in the 80% methanol extract. This level ranged from 8.04 ± 0.14 to 46.81 ± 1.22 mg GAE/100 g fresh weight and flavonoid content was observed relatively low for both two solvents. However, extraction into 70% acetone gave the highest antioxidant activity with all assay. These results showed that dates had strongly scavenging activity on DPPH reaching 3.12 µg/mL in methanol/H2O from Cul1 (6.9 µg/mL with ascorbic acid), also on ABTS reaching 6.51 µg/mL in acetone/H2O from Cul2 (104.98 µg/mL with ascorbic acid).

scholarly journals Morpho-Anatomical and Biochemical Characterization of Embryogenic and Degenerative Embryogenic Calli of Phoenix dactylifera L.

Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 393
Author(s):  
Amal F. M. Zein El Din ◽  
Ola H. Abd Elbar ◽  
Saleh M. Al Turki ◽  
Khaled M. A. Ramadan ◽  
Hossam S. El-Beltagi ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Embryogenic Callus ◽  
Somatic Embryos ◽  
Biochemical Characterization ◽  
Phoenix Dactylifera ◽  
Embryogenic Calli ◽  
Phoenix Dactylifera L ◽  
Phenolic Extract

The study of morpho-anatomical aspects, metabolic changes of proteins, antioxidant substances, as well as phenolic compounds in embryogenic callus (EC) and degenerative embryogenic callus (DEC) was the aim of the present investigation. Ability to form somatic embryos (SEs) was associated with the softness of the EC, which exhibited a white or creamy color and was composed of isodiametric cells containing dense cytoplasm, conspicuous nuclei and minimal vacuoles with observed mitotic activity. Furthermore, protein, reduced glutathione (GSH) and ascorbic acid (ASC) concentrations and the ratio between ASC and dehydroascorborbic acid (DHA) were increased significantly in the EC in comparison to the DEC. In addition, the phenolic extract of the EC was proved to have higher scavenging activity than the extract from the DEC. A loss of embryogenic competence in the DEC was correlated with the presence of more rigid clumps and such calli had a yellowish to brown color and no cell division could be observed in the cells of such aggregates as the cells had large vacuoles and they have very thick walls. Moreover, these morphological and anatomical observations of the DEC were accompanied by accumulations of the oxidized form of ascorbic acid (DHA), H2O2, total soluble phenolic compounds and overaccumulation of naringenin. Alternations in cellular metabolism can affect and regulate the morphogenesis of somatic embryos.

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