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Causative agents of many ailments of plants, animal and human are microbes particularly bacteria and fungus which
are generally treated using antibiotics, but the frequent occurrence of antibiotic resistance requires the development of
new antibiotic agents. Unexplored bioactive natural candidates should be a chance for the production of targeted drugs with
antibacterial and antifungal activity. In this paper, polarity based extracts of four different strains of Chlorella spp. has been
used against 6 bacterial strains namely Pseudomonas aeruginosa (P. aeruginosa), Staphylococcus aureus (S. aureus), Escherichia
coli (E.coli), Klebsiella pneumonia (K. pneumonia), Acinetobacter baumannii (A. baumannii) and Bacillus thuringiensis
(B.thuringiensis) and 6 fungal strains namely Penicillium italicum (P. italicum), Cladophialophora bantiana (C. bantiana),
Rhizopus, Aspergillus falvus (A. falvus), Aspergillus niger (A. niger) and Aspergillus terrus (A. terrus) by using levofloxacin as
standard antibiotic and pure solvent for comparison. Agar well diffusion assay has been used for antibacterial assay while Rapid
Susceptibility Assay (RSA) has been done to measure the antifungal activity of all algal extracts. Later on Minimum Inhibitory
Concentration (MIC) has been calculated for active extracts while Minimum Bactericidal and Fungicidal Concentrations
(MBC and MFC) has been calculated for inactive extracts against fungal and bacterial pathogens. Results have been analyzed
statistically and these results suggest that the Chlorella spp. have potential to develop antimicrobial drugs.
Biography
Sitwat Aman has worked on microalgae during her Post-doc in China, where she tried to find out the best strains for biodiesel production. Nowadays, she is working as an Assistant Professor.