Chemical profiling of male date palm (Phoenix dactylifera L.) leaflets in El M’Ghair region, Algeria : insights into total phenols, flavonoids, proteins, and total sugars

english

2024

volume 120, issue 1

Algeria   biochemical composition   date palm   leaflets   Phoenix dactylifera

Univerza v Ljubljani, Biotehniška fakulteta
(Obvezni izvod spletne publikacije)

This study extensively investigates the biochemical composition of male date palm leaflets (Phoenix dactylifera L.) from the El M’Ghair region in Algeria, focus-ing on the cultivars Deglet Nour, Degla Beida, and Ghars. The chemical analysis centers on proteins, total sugars, total phe-nols, and flavonoids, revealing significant differences in these compounds among the three cultivars. ‘Degla Beida’ exhibits the highest protein content (39.09 ± 4.58 %), contrasting with ‘Ghars’, which records the lowest (18.33 ± 5.35 %). Total sug-ars exhibit variability among cultivars, with ‘Ghars’ displaying the highest levels (74.54 ± 6.92 %) and ‘Degla Beida’ the lowest (46.28 ± 9.11 %). The production ratios of crude methanolic aqueous extracts show consistent extraction efficiencies across cultivars. Abundant phenolic compounds, notably in ‘Degla Beida’, and significant variations in flavonoid content are ob-served. Specifically, ‘Degla Beida’ and ‘Deglet Nour’ boast the highest flavonoid levels (36.02 ± 3.79 and 30.18 ± 3.88 µg QE. mg-1, respectively), whereas ‘Ghars’ demonstrates the lowest (22.02 ± 2.31 µg QE. mg-1). The correlation matrix reveals positive associations among proteins, total phenols, and flavonoids, contrasting with a strong negative association with total sugar content.

19.04.2024