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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2022.11(8): 108-129
DOI: https://doi.org/10.20546/ijcmas.2022.1108.012


Green Biocide from Boerhaavia diffusa Leaf Extract Inhibits Biocorrosion of Mild Steel (MS1010) in Cooling Towers: Bactericidal and Electrochemical Studies
Lavanya, M. Jayanthi*, D. Prakash and M. Kavitha Rani
Department of Biochemistry, Adhiparasakthi College of Arts and Science (Autonomous), G.B. Nagar, Kalavai, Ranipet District, Tamil Nadu – 632 506, India
*Corresponding author
Abstract:

In this study, we have investigated the antimicrobial effects of bacterial strains isolated and characterized from cooling water towers and biofilms niches of green biocide obtained from the plant Boerhaavia diffusa plant extract. Initially we have enumerated the viable bacterial cells from cooling water and biofilms of mild steel (MS1010). Various strains of heterotrophic bacteria that are isolated from viable bacterial colonies include iron oxidizing bacteria (IOB), Manganese oxidizing bacteria (MnOB), acid producing Bacteria (APB). Morphology of the isolated bacterial cells showed circular cells, slight yellow and gram positive rod cells. Specifically we have identified the selective bacterial cells as SKR-4 and SKR-7. Furthermore we have confirmed that the isolated strains SKR-4 and SKR-7 were capable of inducing corrosion of mild steel (MS1010), and it was confirmed using FITR and electrochemical studies like weight loss, polarization studies. Later we have tested the antibacterial effect of green biocide obtained from Boerhaavia diffusa and it was observed that 50 PPM green biocide was optimum for antibacterial effect of Boerhaavia diffusa. Also the same dose 50PPm was capable of inhibiting the formation of biofilm and extracellular polymeric substances (EPS). Taken together, our results showed that Boerhaavia diffusa plant leaf extract has the ability to inhibit the corrosion of mild steel (MS1010) and it is due to its antimicrobial efficacy and ability to inhibit the formation of EPS. However, our results are preliminary and further studies may be required to understand its mechanism of antibacterial action and to improve its efficacy on large scale levels.


Keywords: Mild Steel, Microbial Induced Corrosion, Cooling water Towers, Green Biocide, Boerhaavia diffusa
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How to cite this article:

Lavanya, S., M. Jayanthi, D. Prakash and Kavitha Rani, M. 2022. Green Biocide from Boerhaavia diffusa Leaf Extract Inhibits Biocorrosion of Mild Steel (MS1010) in Cooling Towers: Bactericidal and Electrochemical Studies.Int.J.Curr.Microbiol.App.Sci. 11(8): 108-129. doi: https://doi.org/10.20546/ijcmas.2022.1108.012