Testing the activities of some of the inside and outside cellular compounds produced by the algae Chlorococcum infusionum and Scenedesmus obliquus against some bacteria

Abstract EN

In this study Chlorococcum infusionum and Scenedesmus obliquus were isolated ،purified and identification From the Euphrates River at the city of Nasiriyah.

The water of this canals originally from Tigris River.

Ch-10 culture media was used for their cultivation in suitable laboratory conditions (25c°,200μE/m2/sec) for 16:8 hrs.

Light: dark.

Each culture was harvested at the end of exponential phase .Organic solvents used for extraction were Ethanol، Hexane and Methanol 95% to extract the crude active Intracellular and Extracellular substances, and evaporated down to dryness .Antibacterial activity of these different extracts were evaluated against 6 strains of gram positive bacteria and gram negative bacteria, Agar diffusion method was used in this evaluation.