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Abstract
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Abstract
Background: Researchers are seeking new plant compounds as an alternative to
chemical drugs and antibiotics due to the increasing resistance of pathogenic
bacteria to antibiotics. This study investigated the antibacterial effect of Plantago
ovata and Lallemantia iberica L. seed extracts on some foodborne human
pathogenic bacteria.
Materials and Methods: Disk-diffusion antibiotic sensitivity testing, Minimum
Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC)
were used to evaluate the antibacterial activity of plant extracts in comparison to
the tetracycline, as a control antibiotic.
Results: The results of this experiment showed that the L. iberica seed extract had
the greatest effect on Bacillus subtilis, Bacillus sphaericus and Pseudomonas
aeruginosa and did not have inhibitory effect or moderate inhibitory effect against
other bacteria. Also, P. ovata extract had a high and moderate effect against
Bacillus sphaericus and Pseudomonas aeruginosa, respectively. This extract had
no inhibitory effect on the other bacteria. Tetracycline also had a significant
inhibitory effect on all tested bacteria.
Conclusion: According to the results of this study, it can be concluded that
extracts of some Iranian native plants can be a suitable alternative to the existing
antibiotics.
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