A comparative study on the antimicrobial activity of Musa acuminata (banana) and Allamanda cathartica (yellow bell) flower extracts against Staphylococcus aureus and Pseudomonas aeruginosa.

• Main Authors: Goyala, Leynard G., Sarmiento, Gestine L.
• Format: Theses and Dissertations NonPeerReviewed
• Published: 2013
• Subjects: QH301 Biology; QK Botany; QR Microbiology
• Online Access: http://thesis.dlsud.edu.ph/400/7/GoyalaSarmiento%20...%20-%20YellowBell.pdf; http://thesis.dlsud.edu.ph/400/
• Institution: De La Salle University

This study is conducted to evaluate the inhibitory potentials of Allamanda cathartica (Yellow bell) flower and Musa acuminata (Banana) blossom crude extracts on Staphylococcus aureus and Pseudomonas aeruginosa using disk diffusion employed in Kirby-Bauer method. Results show that both plant species are capable of inhibiting the microorganisms. Hence both bacteria compared to the standard susceptibility index of S. auerus (>17mm) and P. aeruginosa (>12mm) are resistant to the antibacterial components of the plant extracts except for 100% banana blossom extract wherein P. aeruginosa is susceptible. There is no significant difference (p<0.05) among various concentrations of Allamanda cathartica (Yellow bell) flower extracts and the 25% Musa acuminata (Banana) blossom extract. However, a significant difference was observed in 75% and 100% banana blossom extracts. This indicates that banana blossom extract contains adequate amount of antimicrobial bioactive components such as tannins, saponnins, steroids, alkaloids, flavonoids and phenolic compounds than yellow bell flower extract.