Evaluation of the antimicrobial activity of cocos nucifera (Coconut)cotyledon extract against infectious bacterial pathogens

Abes, Pia Elaine A. (2013) Evaluation of the antimicrobial activity of cocos nucifera (Coconut)cotyledon extract against infectious bacterial pathogens. Other thesis, De La Salle University-Dasmariñas.

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Abstract

The study aims to evaluate the antibacterial effect Cocos nucifera (Coconut) cotyledon against the selected infectious bacterial pathogens including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi and Klebsiella pneumonia. Disk diffusion assay following the standard procedure in Kirby-Bauer Method was utilized to establish the antimicrobial activity of coconut cotyledon extracts against the selected infectious bacterial pathogens. The zones of inhibition (mm) were compared to the commercially available antibiotics, tetracycline and ciprofloxacin to determine the susceptibility and resistivity of the microorganisms. All microorganisms are resistant to 50% and 100% coconut cotyledon extracts. Hence, among the infectious bacterial pathogens, S. aureus has the highest zone of inhibition, indicating that coconut cotyledon is more effective to gram positive than gram negative bacteria. This manifest that coconut cotyledon has more liphophilic compounds that can reduce bacterial enzyme/substrate activity and can intercalates in the integrity of the cell wall. Moreover, the zone of inhibition values is suggestive that 100% (12.17mm) is more effective than 50% (7.7mm) coconut cotyledon extract.

Item Type: Thesis (Other)
Additional Information: BIO 1276 2013
Keywords: 1. Coconut cotyledon 2. Antimicrobial activity
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QK Botany
Q Science > QR Microbiology
Users: College of Science and Computer Studies > Biological Science
Depositing User: Ivyjoy Viray
Date Deposited: 10 Nov 2015 01:23
Last Modified: 11 Nov 2015 02:56
URI: http://thesis.dlsud.edu.ph/id/eprint/384

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