Chemical Composition, Scolicidal Effects and Antimicrobial Activities of Green Macroalga Ulva intestinalis

The aim of the study is to investigate antimicrobial, biological, and scolicidal activities Ulva intestinalis (U. intestinalis), which one green algae. U. was collected in appropriate amounts some samples were distilled with water vapour extract their essential oils, them extracted by Soxhlet extraction hexane dichloromethane. values lethal concentration doses (LD50 LD90) calculated using probit analysis. Antibacterial effects oil solvent extracts against gram-positive, gram-negative yeast microorganisms studied. It determined that may have effects. highest activity observed 15 000 µg/ml all organic solvents. Antimicrobial for intestinalis, high potency Enterobacter aerogenes dichloromethane Enterococcus faecalis (inhibition zone ≥ 12 mm). suggested controlled vivo studies should be carried out order use this alga as a bactericidal medication.