Evaluation of antibacterial activity of the brown Seaweed Turbinaria ornata(Turner)*** from Egypt

作     者：Fatma Mohamed Elnabawy Ward Mohamed Ali Deyab 

作者机构：Botany and Microbiology DepartmentFaculty of ScienceDamietta UniversityDamiettaEgypt 

出 版 物：《Journal of Coastal Life Medicine》 (海岸生命医学杂志（英文版）)

年 卷 期：2016年第4卷第8期

页      面：603-607页

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学] 

基　　金：Supported by a grant from the Department of Botany and Microbiology Damietta University Damietta Egypt as a part of MSc programme(Grant No.110/2012) 

主　　题：Turbinaria ornata Bacteria Seaweeds Disc diffusion method Fatty acids Phaeophyta 

摘      要：Objective:To investigate the potential antibacterial activities of ethanol extracts of Turbinaria ornata(***),Oleic acid(OA)and palmitic acid(PA)extracted from *** as well as mixtures of OA and PA(1:1)against some bacterial ***:Brown seaweed *** was collected from Hurghada shores,Red Sea coast of *** and PA were extracted from *** extracts of ***,OA,PA and mixtures of these two fatty acids(1:1)were tested for their antibacterial activities against Escherichia coli,Bacillus cereus,Bacillus subtilis,Klebsiella pneumonia and Staphylococcus aureus by the disc diffusion ***:Ethanol extracts of ***,OA,PA and mixtures of OA and PA(1:1)showed antibacterial activities that increased significantly(least significant difference at 0.05 level)with increasing concentrations against all tested *** concentrations of ethanol extracts of *** and extracted OA showed its highest activity against Bacillus subtilis,while PA and mixtures of PA and OA(1:1)showed its highest activity against Bacillus *** maximum inhibition activities were shown for mixtures of OA and PA(1:1).Scanning electron microscope showed that mixtures of OA and PA(1:1)caused plasmolysis and reduction in cell size of Escherichia ***:Different concentrations of *** and its fatty acids showed activities against all tested ***,it is a potential source of natural antimicrobial compounds.