antibacterial activities of hydroalcoholic extract of rosa canina l against hospital acquired infections

Aims: every year around the world, hospital infections and resistance to antibiotics lead to many complications in hospitalized patients. this study aimed to determine and compare the antibacterial effect of hydroalcoholic extract of rosa canina plant (rosa canina l) on escherichia coli, pseudomonas aeruginosa, klebsiella pneumoniae and staphylococcus aureus bacteria isolated from surgical wounds in yasuj hospitals.materials & methods: in this cross-sectional study, the effect of rosa canina l hydroalcoholic extract on 20 samples of pseudomonas aeruginosa, escherichia coli, klebsiella pneumoniae and staphylococcus aureus was investigated. the minimum inhibitory concentration (mic), minimum bactericidal concentration (mbc) and zone of inhibition (zoi) of each clinical sample were investigated and compared with the standard sample. the results were statistically analyzed by spss 16 software.findings: rosa canina l hydroalcoholic extract had no antibacterial effect on pseudomonas aeruginosa. the lowest inhibitory concentration was related to staphylococcus aureus 125 µg/ml, escherichia coli 325 µg/ml and klebsiella pneumoniae 350 µg/ml, respectively. the difference in minimum mic, mbc and zoi between clinical and standard samples was not statistically significant. the zoi diameter of klebsiella pneumoniae and escherichia coli clinical samples were equal (9.8 mm).conclusion: the hydroalcoholic extract of rosa canina l has a better antimicrobial effect on staphylococcus aureus than the other 3 investigated bacteria and has no effect on pseudomonas aeruginosa. there is no difference between the effect of the examined extract on clinical and standard samples, and the effect of this extract on different bacteria is different.