Assessment of the anti-biofilm potency of Psidium guajava on two strains of Pseudomonas fluorescens - 15726
- Department of Biology, Claflin University Orangeburg, SC 29115 (United States)
Psidium guajava, more commonly known as Guava is an evergreen plant of the family Myrtaceae. It is a traditional plant used to treat various gastrointestinal infections such as typhoid fever, and also known to inhibit the growth of certain bacteria including Staphylococcus aureus. Pseudomonas fluorescens is an organism capable of surviving in heavy metal contaminated environment. One common type of heavy metal contaminant is Chromium(Cr), known to cause serious ecological and health problems. The most toxic and soluble form of chromium is Cr (VI) also called hexavalent chromium, while Cr (III) is less toxic. Pseudomonas fluorescens is a common bacterial strain known to not only survive in chromium contaminated soil, but is also capable of converting toxic chromium (VI) to chromium (III) due to its ability to form biofilm. The objective of this research is to investigate the effectiveness of Psidium guajava in reducing the formation of biofilm by Pseudomonas fluorescens, thereby enhancing its movement in porous media, such as soil. This pilot research project was conducted in collaboration with Savannah River National Laboratory, and investigated the remediation of chromium (VI). Static biofilm assays were conducted using methanolic and chloroform extracts of Psidium guajava. Results indicated that the extracts of Psidium guajava did reduce biofilm formation in Pseudomonas fluorescens, pf-01 strain. However, the guava extract did not have an inhibitory effect on biofilm formation in the pf-5 strain. (authors)
- Research Organization:
- WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
- OSTI ID:
- 22824536
- Report Number(s):
- INIS-US--19-WM-15726
- Country of Publication:
- United States
- Language:
- English
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