Antioxidative and anti-α-amylase activities of four wild plants consumed bypastoral nomads in Egypt > Volume 09 - 2009

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Oriental Pharmacy and Experimental Medicine
Volume 09 - 2009
Date: March 07, 2008

Journal: Pages 217-224

September 2009 | Antioxidative and anti-α-amylase activities of four wild plants consumed bypastoral nomads in Egypt…

SJ Hossain1,3,*, M El-Sayed2 and H Aoshima1

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Summary

​In this study, four plants grown naturally in Egypt that are usually consumed by pastoral nomadswere screened for their total phenolic contents, antioxidative, and anti-α-amylase activities. Driedpowder of plant’s part was extracted in absolute or 70% ethanol. A polar extract of Panicum turgidum(PTPE) had the highest total polyphenol content {92.5 mg gallic acid equivalents (GAE)/g},followed by an alkaloid extract of Withania somnifera (WSAlk; 77.5 mg GAE/g), and an ethanolextract of Leptadenia pyrotechnica (LPEE; 59.1 mg GAE/g). By employing different assays such asDPPH radical scavenging, reducing power, Fe+ chelating, H2O2 scavenging and total antioxidantcapacity, it was shown that PTPE, WSEE (ethanol extract of W. somnifera), WSAlk and LPEE hadpromising antioxidant activity, though, their potency varied according to the different tests.WSAlk had the highest level of α-amylase inhibition (40.2%) in vitro, followed by WSEE (30.5%).Therefore, it can be concluded that these plants, especially extracts of PTPE, and WSAlk arebeneficial to physiological health, and could be used in food and pharmaceutical industries toprepare dietary supplements, functional foods or food preservatives.


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