Antimicrobial and antioxidant activity of seed extracts of Croton zambesicus Muell. Arg
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2015, Vol 3, Issue 7
Abstract
The seed extracts of Croton zambesicus Muell. Arg. were screened for antimicrobial activity against some typed and pure cultures of bacterial and fungal species. These were carried out by the cup plate agar diffusion method on melton nutrient agar for bacteria and sabouraud dextrose agar for the fungi. Ethyl acetate, ethanol and chloroform used for the extraction, four bacterial strains (Bacillus susbtilis, Pseudomonas aeruginosa, Escherichia coli and Staphylococcus aureus) and two fungal species (Aspergillus niger and Candida albicans) were tested for antimicrobial activities of the extract. The antimicrobial activity was of the limited type. Ethyl acetate and ethanolic extracts represented positive results against the entire microorganism at a high concentration (100mg/ml).While chloroformic extract showed negative results. The antioxidant activity proved that the ethanolic extract was able to reduce the DPPH free radicals (89%). Keywords: Croton zambesicus Muell. Arg.; antimicrobial activity; antioxidant activity and DPPH; bacterial strains and fungal species.
Authors and Affiliations
Manal A. Ibrahim, Amna M. Ali, Mona A. Maky, Nafesa N. Abas, Sulafa H. Hassan
Keywords
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