Antimicrobial activity of some plant extracts against bacterial strains causing food poisoning diseases

Publication date: Available online 24 February 2017 Source:Saudi Journal of Biological Sciences Author(s): Ashraf A. Mostafa, Abdulaziz A. Al-Askar, Khalid S. Almaary, Turki M. Dawoud, Essam N. Sholkamy, Marwah M. Bakri Prevention of food spoilage and food poisoning pathogens is usually achieved by use of chemical preservatives which have negative impacts including: human health hazards of the chemical applications, chemical residues in food & feed chains and acquisition of microbial resistance to the used chemicals. Because of such concerns, the necessity to find a potentially effective, healthy safer and natural alternative preservatives is increased. Within these texts, Plant extracts have been used to control food poisoning diseases and preserve foodstuff. Antimicrobial activity of five plant extracts were investigated against Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Salmonella typhi using agar disc diffusion technique. Ethanolic extracts of Punica granatum, Syzygium aromaticum, Zingiber officinales and Thymus vulgairs were potentially effective with variable efficiency against the tested bacterial strains at concentration of 10 mg/ml while extract of Cuminum cyminum was only effective against S. aureus respectively. P. granatum and S. aromaticum ethanolic extracts were the most effective plant extracts and showed bacteriostatic and bactericidal activities against the highly susceptible strains of food borne path...
Source: Saudi Journal of Biological Sciences - Category: Biology Source Type: research