Physicochemical study of extracts of a marine green algae (Ulva lactuca)

Algae possess substances such as polysaccharides, carrageenans and alginates whose physicochemical properties are of interest to many industrial sectors. For example, the agro-food, cosmetics, pharmaceutical and textile sectors. This has oriented scientific research towards new substances of biotechnological interest. 30% of the active substances have been developed from natural substances, 10% of which have been isolated from marine organisms. In this work, new bioactive elements of Ulva lactuca taken from the coastal area of Elkala (Algeria) were isolated. The results obtained by gas chromatography coupled with mass spectrometry (GC/MS) showed that the essential oil of U. lactuca contains elements that have anti-fouling characteristics that are probably beneficial for the environment. These elements are yellow in colour and have a fresh woody odour and a viscous appearance with a high gelling capacity. We are trying to highlight the important points brought by this work, as well as future prospect