Phytochemical Analysis and Antibacterial Efficacy of Mentha piperita (L) Ethanolic Leaf Extract against Clinical Isolates of Uropathogens | Chapter 10 | Theory and Applications of Microbiology and Biotechnology Vol. 1
Aim:
The present study was designed to evaluate the antibacterial activity of Mentha
piperita (L) leaf extract against clinical isolates of urinary tract
infections.
Introduction:
M. piperita L. (Peppermint) is a strongly scented herb belonging to family Lamiaceae.
The plant is stimulant, aromatic and used for headache, vomiting and allaying
nausea. In India the leaves are used to relieve sore throat. The most common
form of bacterial infections is urinary tract infections (UTIs). They affect
people of all age groups throughout their lifespan.
Methodology:
The M. piperita ethanolic extract (MPEE) was prepared by cold maceration. The
presence of phytoconstituents was determined using standard protocols. Clinical
isolates of UTI pathogens such as Staphylococcus aureus, Enterococcus faecalis,
Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa were
isolated from urine samples and identified by biochemical tests. The
antibacterial property was determined by agar well diffusion method.
Results
and Discussion: The preliminary phytochemical
screening revealed the presence of amino acids, carbohydrates, alkaloids,
proteins, glycosides, steroids, tannins and flavonoids. MPEE exhibited
pronounced antibacterial activity against tested microorganisms. The extract
exhibited antibacterial activity at 1000 µg concentration against S. aureus
(21.50±1.22 mm), E. coli (19.33±0.81 mm), P. aeruginosa (15.33±1.69 mm) from
high to low respectively. The minimum inhibitory concentration was ranged from
62.5 to 125 mg/ml.
Conclusion:
The results of antibacterial studies confirm that MPEE was found to contain
bioactive constituents that exhibited notable antibacterial activity. However,
further isolation and characterization of phytoconstituents will be needed to
evaluate the antimicrobial activities against a wider range of microbial
pathogens.
Author(s) Details
Dr. Sowjanya Pulipati, B.
Pharm, M. Tech (Bio-Tech), Ph.D
Vignan Pharmacy College,
Vadlamudi- 522213, Guntur, Andhra Pradesh, India.
Sai Koushik Oruganti
Master of Medical
Biotechnology, University of Windsor, Canada.
P. Srinivasa Babu, M. Parm,
PhD
Vignan Pharmacy College,
Vadlamudi- 522213, Guntur, Andhra Pradesh, India.
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