Phytochemical Screening and Radical Scavenging Activity of Whole Seed of Durum Wheat (Triticum durum Desf.) and Barley (Hordeum vulgare L.) Varieties
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Date
2017-09-04
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Jordan Journal of Biological Sciences
Abstract
Three durum wheat (Triticum turgidum L. var. durum) cultivars, namely Bousselam, Vitron, and Gaviota durum, and one
barley genotype (Hordum vulgare L.), Fouara, grown under semi-arid conditions were compared for their total phenolic and
flavonoids content and antioxidant activities. Antioxidant activity was tested using DPPH radical scavenging assay method.
The phytochemical screening revealed the presence of tannins, flavonoids, coumarins, saponins and phenolic compounds in
each variety seeds. The results of the present study indicate significant differences among the evaluated varieties in terms of
total phenolic and flavonoid contents and for radical scavenging capacity. Among the tested varieties Gaviota durum showed
high total phenolic (95.32± 0.27 μg /mg) and flavonoid content (78.80 ± 0.27 μg/mg) and an intermediate radical scavenging
capacity. While barley variety Fouara expressed high radical scavenging capacity (54.8% ±0.34) and intermediate total
phenol and flavonoids contents. The tested durum wheat and barley varieties possessed varying but meaningful antioxidant
activities which were not significantly correlated to their phenol and flavonoid contents. It is necessary to ensure that
increased bioactive components in grains are combined with good agronomic performance, high grain yield and high quality
for processing. The results of the present study should have significant implications for plant breeders as well as for grain
and food processors.