Ripe date fruits contain phenolic compounds which possess a high antioxidant activity. The current review was carried out to evaluate total phenolic content in ripe date fruits. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) was followed during the review process. Relevant studies published from inception up to March 2019 were retrieved from three databases. Study selection was performed based on specific inclusion criteria. A total of twenty-two articles were selected and included in the present review. Data collected from these studies were organized, pooled, and analyzed using descriptive statistics. Total phenolic content means and medians have been reported for the collected ripe date fruit samples for each included study and pooled data. The results suggested that ripe date fruits contain a potent total phenolic content that can contribute mainly to their antioxidant properties.

The date palm is widely known as a richer nutritional source and natural medical agent. Date fruit is a major source of carbohydrates and dietary fiber, and it has contains proteins, minerals, vitamins, phenolic compounds, carotenoids, sterols, and triterpenoids. The beneficial potential of this fruit is well known in Arab countries and even in the world. Date fruit has many health benefits such as Glucose-lowering potential, anti-cancer activity, antioxidant activity, hypocholesterolemia-lowering potential, antimicrobial activity, anti-inflammatory activity, bone stimulating activity, which is attributed to the existence of bioactive substances such as carotenoids, polyphenols, triterpenoids, flavonoids, sterols, and some vitamins and minerals. Overall, Arabian date palms’ nutritional values and pharmacological activities remain to be explained. Thus, this study states the history, nutritional and health effects of Arabian date palm, highlighting the possibility of palm date components developing novel beneficial approaches for managing the above mentioned illnesses. Keywords: Arabian date palm; Arab’s tree; Nutritional values; Pharmacological activities

This research was undertaken to validate the low dosages of γ-radiation of sorghum to examine the efficiency of gamma irradiation doses in quality attributes and storability of sorghum grain. Infested sorghum grains with the red flour beetle at the adult stage were irradiated at 0.25, 0.5, 0.75, 1.0, and 2.0 kGy emitted by ⁶⁰CO. Subsequently, the mortality rate of the red flour beetle as affected by gamma doses was estimated and the storability characteristics and nutritional value of sorghum grains were measured. Eventually, the Partial Least Squares regression (PLS) analysis was executed to confirm the optimum dose of gamma which eliminate the red flour beetle and enhanced the grain quality. Results provide that the storability characteristics were enhanced after treatments. However, the changes in the germination rate of the grains were not different significantly after radiation. On the other hand, the radiation process enhanced sorghum grins' nutritional quality. Both tannins and phytic acid content dropped significantly and the digestibility and solubility of protein were gradually incremented in the grains. The PLS results indicated that using 1 and 2 kGy reflect the utmost effective dosage for sorghum. It can be concluded that this method is a potent rapid and operative preservation process to the alternate smoking chemical procedure for improving sorghum’s nutritional and functional quality and prolong its shelf life. Possibility of providing effective and rapid quarantine security as an alternative to chemical fumigation protocol to extend shelf life and enhance the nutritional and functional quality of sorghum.

A comparative study evaluated the total polyphenol content (TPC), total flavonoid content (TFC), and antioxidant activity of Moringa peregrina (MP) seeds, bark, and leaves extracted using different solvents. Antioxidant activity was assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant power (FRAP) assays. Significant variations were observed among plant parts and solvent systems. Leaves consistently showed the highest TPC and TFC, followed by bark and seeds. Absolute ethanol extracts yielded high TPC and TFC in leaves and bark, while aqueous methanol produced high TPC in bark. The strongest DPPH scavenging activity was found in leaves (91.6 %), followed by bark (90.7 %) and seeds (19.3 %). Ethanol extracts also showed the highest ABTS and FRAP antioxidant activity values, particularly in leaves and bark. Antioxidant activity was strongly correlated with phenolic and flavonoid contents regardless of the solvent used. Overall, MP leaves and bark demonstrated superior antioxidant potential, suggesting their possible therapeutic value in disease prevention and management.