The present study was carried out to evaluate the antimicrobial potential of Artemisia sieversiana Ehrhart. Ex. Willd. (Asteraceae) and Origanum vulgare L. (Lamiaceae) from their extracts. Solvent ether, petroleum ether, chloroform, acetone, ethanol, benzene and aqueous extracts were tested against the test organisms viz., Bacterial strains (Escherichia coli and Bacillus subtilis) and fungal st...

BACKGROUND Over the past several years our laboratories have investigated different aspects of the challenging issue of the alterations in bacterial susceptibility to antibiotics induced by physical stresses. OBJECTIVE To explore the bacterial susceptibility to antibiotics in samples of Salmonella enterica subsp. enterica serovar Typhimurium (S. typhimurium), Staphylococcus aureus, and Klebsi...

The aim of this study is to determine the sensitivity of polyphenol green tea on mutans streptococci. Tea is a traditional drink that is beneficial to health. One of its benefits is its capability to prevent dental caries because it has active substance polyphenol.An extract of green tea non-fermented tea leaves of Camellia sinensis and its chromatographically isolated polyphenol compound was e...

S. griseus isolated from soil samples was screened for production of streptomycin by plate assay. Identification of streptomycin antibiotic was done by paper chromatography using selected strains of bacteria by measuring the zone of inhibition. Among all the bacterial strains studied, the highest zone of inhibition was measured against E. coli whereas lowest was measured against S. aureus after...

among 160 samples collected from rice paddy of the guilan province including rice plant, seed, rhizospher, paddy's soil, paddy's water and sclerotium of the causal agent of rice sheath blight (rhizoctonia solani), 610 bacterial strains were isolated. 71 bacterial strains (11.64%) had the ability of inhibition mycelial growth fungus in dual culture test on pda medium. according to two characteri...

Hexane, chloroform, ethyl acetate and methanol extracts of Azima tetracantha were screened for their antimicrobial activity against human pathogenic bacterial and fungal strains. Antimicrobial activity was carried out by disc diffusion method, determination of minimum inhibitory concentrations (MIC), minimum bacterial concentrations (MBC) and minimum fungicidal concentrations (MFC) against thre...

considering the emergence of antibiotic resistance, scientists are interested in using new antimicrobial agents in the treatment of infectious diseases including infections of the enteric systems. lactic acid bacteria have the great potential to produce antimicrobial compounds that inhibit and control pathogenic bacteria. the aim of this study was to determine the anti-bacterial and anti-adhere...

mastitis is one of the most costly diseases in the dairy industry. the use of antibiotics in the treatment of mastitis leads to bacterial resistance and health problems for consumers. this study aimed to determine the antibacterial properties of essential oil of thymus vulgaris on the bacteria staphylococcus aureus, escherichia coli and staphylococcus were agalactia. antibacterial properties of...

background : this study investigated the in vitro and in vivo antibacterial effects of three mouthwashes on su-pragingival plaque microbiota. the three mouthwashes under study were 0.2% chlorhexidine (chx), listerine®, and persica (pm). water was used as negative control. methods : supragingival plaque samples were collected from 32 patients with gingivitis in the dental school of shahid behesh...