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Journal :   Research Journal of Pharmacy and Technology

Volume No. :   10

Issue No. :  3

Year :  2017

Pages :   789-791

ISSN Print :  0974-3618

ISSN Online :  0974-360X


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Inhibition of biofilm formation in Serratia marcescens by Andrographolide from Andrographis paniculata



Address:   R. Nancy Immaculate Mary1*, N. Banu2
1Research Scholar, Department of Biotechnology, Vels Institute of Science, Technology and Advanced Studies, Chennai.
2Associate Professor, Department of Biotechnology, Vels Institute of Science, Technology and Advanced Studies, Chennai.
*Corresponding Author
DOI No: 10.5958/0974-360X.2017.00148.2

ABSTRACT:
Quorum sensing (QS) is well known for bacterial virulence, antibiotic resistance and biofilm production. Inhibition of quorum sensing can reduce the risk of microbial pathogenicity in all infection. In this present study the compound Andrographolide which is present in Andrographis paniculata leaf extract was assessed for its anti quorum sensing activity against acyl homoserine lactone (AHL)-dependent biofilm formation in Serratia marcescens. The Andrographolide obtained from Andrographis paniculata exhibited a concentration dependent (100 µg/ml) reduction in biofilm production in Serratia marcescens to a level of 90% and compared with the standard Andrographolide (sigma aldrich). Microtiter plate and Light microscopic analysis further confirmed the reduction in the biofilm forming ability of Serratia marcescens when treated with andrographolide. In addition the Andrographolide present in Andrographis paniculata by itself showed no growth inhibitory effect on Serratia marcescens.
KEYWORDS:
Andrographis paniculata, Quorum sensing inhibition, Acyl homoserine lactone, Serratia marcescens, anti bacterial assay, Antibiofilm.
Cite:
R. Nancy Immaculate Mary, N. Banu. Inhibition of biofilm formation in Serratia marcescens by Andrographolide from Andrographis paniculata. Research J. Pharm. and Tech. 2017; 10(3): 789-791.
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