AbstractKey words: Ulva lactuca
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 14â-Hpregnan-3one as the main compound.
, Edible seaweeds, Green algae, Saudi Arabia.