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Antibacterial activity of the crude ethanolic extracts of Etlingera elatior and Etlingera philippinensis

Author(s): Gina B. Barbosa, Cresilda V. Alinapon, Analyn G. Gultiano

Published: 16 Feb 2021
Volume: 24 (2020) Issue 2, Page: 40, Category: Natural Sciences,


Due to the emergence of multidrug resistant bacteria, researchers are on search for a new source of antimicrobial agents such as plants. This study reports the antibacterial activities of the leaves and rhizomes of E. philippinensis and E. elatior against Gram-positive (M. luteus, S. aureus and S. marcescens) and Gram-negative bacteria (E. coli and P. aeruginosa, B. cereus). Disc diffusion method was employed in determining the antibacterial activity of the plant ethanolic extracts with concentrations of 3000 ppm and 10000 ppm. Highest antibacterial activity was exhibited by the leaves and rhizomes of the Philippine endemic E. philippinensis (10000 ppm) against M. luteus (12.00 ± 0.56) and P. aeruginosa (11.50 ± 0.45), respectively. Of all extracts, only the leaves E. elatior (10,000 ppm) showed antibacterial activity against S. marcescens which is 6.57 ± 0.49.

Keyword(s): Antibacterial Etlingera elatior Etlingera philippinensis

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