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Author: Salama Zeinab A. Gaafar Alaa A. El-Hariri D. M.
Publisher: Taylor & Francis Ltd
ISSN: 1544-0478
Source: Journal of Natural Fibers, Vol.9, Iss.4, 2013-01, pp. : 277-289
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
The current study represents the investigation of the methanol extracts of three Egyptian flax cultivars for their antioxidant activity and phytochemical screening was realized for the extracts. Three flax cultivars were evaluated for their DPPH• radical, and metal chelating activities, total phenolic (TPC), and total flavonoids contents (TFC). All cultivars exhibited significant antioxidant activities determined by the two assays, and contained significant levels of phenolic and flavonoids compounds. Our results showed that the highest activity of DPPH• radical scavenging activity was exhibited by the methanol extracts of Giza-8 and Sakha-2. The highest metal chelating activity was observed in Giza-8 compounds like phenolics, flavonoids, and others, which could be responsible for the obtained activities. Sakha-2 and Giza-8 showed the highest total phenolics (TPC) and total flavonoids (TFC) in Giza-1. The correlation analysis revealed that the TPC showed strong correlations with DPPH• radical scavenging activity (p ≥ .05), whereas its correlations with iron chelating activity were poor (p ≥ .05).
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