Antibacterial Activity Investigation and Anti-Biotic Sensitive's for Different Solvents (Ethanol, propanol, DMSO and di Ethel ether) Extracts of Seeds, Leafs and Stems of (Laurus azorica and Avena sterilis) Plants

The antibacterial investigation of different extracts (Ethanol, propanol, DMSO and di Ethel either) was carried on different species of bacteria including Gram positive bacteria (Staphylococcus aureus, Bacillus cereus and Streptococcus pneumoniae) and Gram negative bacteria: (Escherichia coli, Pseudomonas aeruginosa, Agnobacteriumsp, and Erwinia carotovora).This study was carried out on leafs, stems and seeds of Laurus azorica and Avena sterilis plants, which growing at Al –Gabal Al –Akhder region, Libya.).The results recorded that, there are variations for antibacterial activities, also the results showed different effects on the selected microbial species which selected in this study, where some of extracts gave inhibition zones compared with those which no gave the effect on the studied bacteria. The results recorded different effects of the solvents extracts depending on the polarities and bacteria species. Also the anti-biotic sensitive studies of the plant extracts showed effects on the selected anti-biotic in this study.