antibacterial activity of the ethanolic extract of some plant leaves on aerobic and anaerobic pathogens

Abdul- Rahman, Ghada Y

doi:10.33899/rden.2011.164455

	antibacterial activity of the ethanolic extract of some plant leaves on aerobic and anaerobic pathogens
Al-Rafidain Dental Journal
Article 27, Volume 11, Issue 3, 2011, Pages 215-219 PDF (128.72 K)
Document Type: Research Paper
DOI: 10.33899/rden.2011.164455
Author
Ghada Y Abdul- Rahman
Abstract
Aims: To evaluate the antibacterial effect of ethanolic extracts of three medicinal plants (Camellia sinensis,green and black tea, and Ziziphus spp) on different aerobic and anaerobic bacteria. Material and Methods: The leaves of black tea, green tea, and ziziphus from local markets were collected and extracted in ethanol, the antibacterial activity of 50 ,5, and 0.5% of the ethanol extracts against Escherechia coli, Staphylococcus aureus, Actinobacilus actinomycetemcomitans, viridians streptococci and black pigmenting bacteria were investigated using paper disk diffusion technique. Results: The results obtained showed that ethanolic extract exhibited antibacterial activities against Escherechia coli, Staphylococcus aureus, Actinobacilus actinomycetemcomitans, viridians streptococci and black pigmenting bacteria. The extracts produced inhibition zones ranging from 2 – 32 mm against the test bacteria compared with chlorhexidin (12-15mm). Conclusions: The ethanolic extracts of the examined plants were effective antibacterial agents against the aerobic and anaerobic bacteria especially the periodontopathogens so we suggest to use them in treatment and prevention of gingivitis and periodontitis.
Keywords
antibacterial; green tea; black tea; Ziziphus

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