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Egypt. J. Phycol.. 2007; 8(1): 185-194

Phytochemical studies on Ulva lactuca (L.) Thuret from Red Sea Coast of Jeddah, Saudi Arabia

Zeinab El Sewafy*, Naseem Ismaeil Radi**.

The chemical investigation of Ulva lactuca (L.) Thuret showed the presence of flavonoids, carbohydrates/glycosides, tannins, steroids, chlorides and sulphates, while free from alkaloids. Also, the free and combined sugars, amino acids, phenolic acids, fatty acids, hydrocarbons, sterols and minerals were analysed quantitatively. The assay of steroidal terpene revealed the presence of 14-Hpregnan-3one as the main compound.

Key words: Ulva lactuca, Edible seaweeds, Green algae, Saudi Arabia.

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