A Comparison of the Antimicrobial Effectiveness of Aqueous Extracts of Garlic, Ginger and Lime and Two Conventional Antibiotics on Escherichia coli, Salmonella spp., Shigella spp. and Bacillus cereus.
D Tagoe, F Gbadago
antimicrobial, extracts, garlic, ginger, lime, mbc, mic
D Tagoe, F Gbadago. A Comparison of the Antimicrobial Effectiveness of Aqueous Extracts of Garlic, Ginger and Lime and Two Conventional Antibiotics on Escherichia coli, Salmonella spp., Shigella spp. and Bacillus cereus.. The Internet Journal of Microbiology. 2009 Volume 8 Number 2.
The antimicrobial effectiveness of extracts of garlic, ginger and lime on
Man has been using natural products of animals, plants and microbial sources for thousands of years either in the pure forms or crude extracts (Parekh and Chanda, 2007). Biologically active compounds from these diverse sources have been isolated and characterized worldwide with the elucidation of the chemical structures of some of these compounds leading to the synthesis and production of more potent and safer drugs (Bhattacharj
Thus the study aim at determining the antimicrobial potential of aqueous extracts of garlic, ginger and lime in comparison with that of the conventional antibiotics of choice in treating gastrointestinal infections caused by the test bacteria.
Material and Methods
There were generally some variations among the MIC’s of the plant extracts. MIC’s for garlic extracts on
MBC’s of garlic extracts of 150mg/ml and 200mg/ml respectively were generally lower than that of Lime extracts 400mg/ml and 450mg/ml on
Results from the study was similar to works by Ankri and Mirelman in (1999) which showed that the test bacterial were inhibited in varying degrees by the plant extracts.
Overall garlic extracts had the best antimicrobial activity against majority of the test organisms resulting in a comparable activity with the conventional antibiotics against some of the test bacteria such as
Research using other media in the extraction of garlic has found aqueous extraction to be more potent than the organic extracts (Roy
This study confirms the antimicrobial potential of some aqueous plant extracts and supports the use of these extracts in traditional medicine. It also shows the antimicrobial potential of garlic against all the test organisms and particularly that of
We thank the technical staff of the Department of Laboratory Technology and Molecular Biology and Biotechnology of the University of Cape Coast and the staff of Bacteriology Department, Central Laboratory, Korle-Bu Teaching Hospital, Accra, Ghana.