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oai:ojs.www.eurjchem.com:article/711 2013-09-30T04:22:07Z eurjchem:ART driver

Proximate compositions, phytochemical constituents, antioxidant activities and phenolic contents of seed and leaves extracts of Egyptian leek (Allium ampeloprasum var. kurrat) El-Rehem, Fouad Abd El-Rehem Ahmed Abd Ali, Rehab Farouk Mohammed Leek Leaf Seed Antioxidant activities 2 2-Diphenyl-1-picrylhydrazyl Allium ampeloprasum var. kurrat Leeks (Allium ampeloprasum var. kurrat.) are the most commercially produced vegetables in the world. The seed and leaves of this plant were analyzed for proximate composition and mineral content. Phytochemical screening, total polyphenols, total flavonoids, tannins, radical scavenging activity by 2,2-diphenyl-1-picrylhydrazyl (DPPH), total antioxidant activities and phenolic profile of various extracts of Egyptian leek were screened and investigated. The seed is good source of fat and protein, whereas the leaves are good source of crude fiber and ash. Both seed and leaves contain substantial quantities of potassium, calcium, and phosphorus. Methanolic and ethanolic extracts of seeds and leaves were found to contain alkaloids, steroids, terpenoids, flavonoids, tannins, saponines, reducing sugars, proteins and oil. The highest values of total phenolic, flavonoid, tannin, radical scavenging and antioxidant activities were observed for methanolic and ethanolic extracts of seed and leaves. HPLC analysis results showed that certain phenolic compounds; gallic, coumaric, caffeic, tannic, vanillic, chlorogenic, kaempferol, and quercetin exist in methanolic extracts of both seed and leaves at different levels. These results suggested that Allium ampeloprasum phenolic compounds could be used as a natural antioxidant. Atlanta Publishing House LLC 2013-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/711 10.5155/eurjchem.4.3.185-190.711 European Journal of Chemistry; Vol. 4 No. 3 (2013): September 2013; 185-190 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/711/PDF