• G. Kumaresan
• J. Jayachitra
• P. Sivasakthivelan

The microalga, Spirulina platensis (Single Cell Protein) has been used by human because of its nutritional and possibly medicinal effects. It contains high protein content, vitamins (A, D, E, K, and B complex vitamins), beta-carotene, manganese, zinc, copper, iron, selenium, and gamma linolenic acid. Numerous studies reported that Spirulina contains biological properties such as immuno modulation, antioxidant, anticancer, antimicrobial, and probiotic effects. The aim of the present study is to analyze the antibacterial activity of Spirulina platensis extract of methanol, ethanol, acetone and hexane against certain human bacterial pathogens viz., Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Vibrio vulnificus by paper disc diffusion and agar well diffusion methods. The different extract of S. platensis concentrations at 10 µg were used to analyze the antibacterial activity in human bacterial pathogens. In the present study, two different diffusion techniques like paper disc and agar wells were used to find effect of S. platensis against bacterial pathogens. Methanol extract of S. platensis showed highest inhibition zone against bacterial pathogens compare to other extracts in both techniques.

Spirulina platensis, antibacterial activity, bacterial pathogens

"Antimicrobial Properties of Spirulina platensis Extract Against Certain Bacterial Pathogens", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.891-896, May-2019, Available :http://www.jetir.org/papers/JETIR1905S32.pdf

"Antimicrobial Properties of Spirulina platensis Extract Against Certain Bacterial Pathogens", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp891-896, May-2019, Available at : http://www.jetir.org/papers/JETIR1905S32.pdf