ANTIBACTERIAL STUDY OF CHLORELLA VULGARIS ISOLATED FROM FRESH WATER

Abstract

Chlorella vulgaris is growing in either fresh water or sea water.  It can provide various other nutrients including proteins, minerals, vitamins, and antioxidants. World production of consumable algae and algae products to be used as foods and   medicines have reached thousands of tons per year. In this study, Chlorella vulgaris was collected and isolated from freshwater. The extracted of chlorella vulgaris assay was tested to   investigate its efficiency against four bacterial strains (Achromobacter sp (S1), Staphylococcus sp (S2) Escherichia coli (S3), Shigella dysenteriae (S4)), and was determined by disk diffusion method. Different concentration extracts from the microalgae Chlorella vulgaris (25, 50, 75 and 100%) were used. Results showed that the 75% of the extract was highly significant against Escherichia coli and followed by concentration 25% against Achromobacter sp, however, the lowest significant against Staphylococcus sp at the concentration 100%. The antimicrobial activity of the Chlorella vulgaris extract was higher than the antibiotics used against the testes microorganisms.