ABSTRACT
Antibacterial activities of aqueous and ethanolic
extracts of different parts of Moringa oleifera plant were evaluated against
some human bacteria pathogens. Plant parts were seed, leaf, leafstalk, stem and
root while the bacteria pathogens were Escherichia coli. Staphylococcus aureus,
Pseudomonas aeruginosa and Salmonella species. Results obtained showed that the
different phytochemical substances: alkaloid, saponin, tannin, flavanoid,
phenol and others were present in all parts of the plant studied, although to
varying levels. It was also found that the activity of the extracts varied with
extracting solvents as well as with the test bacteria species. Statistically,
the activities of the extracts were significantly different and their effects
on the test organisms also significantly different, (P <0.05). The aqueous
extract of the seed inhibited the growth of pathogens with inhibition zone
diameters ranging from 6.33 ± 0.88mm (Escherichia coli) to 8.67 + 0.58mm
(Salmonella). The ethanol extracts of seed had corresponding inhibition zone
range of 7.00 ± 1.00mm (Pseudomonas aeruginosa) to 14.33 ±0.58mm
(Staphylococcus aureus) .The aqueous extracts of the leaf caused inhibition
zones with diameter range of 11.67 + 1.15mm (Pseudomonas aeruginosa) to 16.33±
1.53mm (Salmonella). However, the leaf extracts were found to be more potent
against the pathogens showing inhibition zone diameters of 13.0mm to16.3mm in
aqueous and 13.3mm to 18.0mm in ethanol extract, while leafstalk was the least,
5.7mm to 7.7mm (aq) and 7.3mm to 9.3mm (eth). Furthermore, the standard
antibiotics were found to be significantly different, (P < 0.05) more active
on the organisms than the extracts having caused inhibition zones range of
18.67 ± 0.58mm (Pseudomonas aeruginosa) to 21.67 ± 0.58mm (Salmonella). The
potency of the extracts against the pathogens was attributed to the different
phytochemical substances present in the plant parts
ELUWA, E (2022). Antibacterial And Phytochemical Activities Of Moringa Oleifera On Bacteria Causing Wound Infection And Gastroenteritis. Mouau.afribary.org: Retrieved Nov 24, 2024, from https://repository.mouau.edu.ng/work/view/antibacterial-and-phytochemical-activities-of-moringa-oleifera-on-bacteria-causing-wound-infection-and-gastroenteritis-7-2
ELUWA, ELUWA. "Antibacterial And Phytochemical Activities Of Moringa Oleifera On Bacteria Causing Wound Infection And Gastroenteritis" Mouau.afribary.org. Mouau.afribary.org, 16 Dec. 2022, https://repository.mouau.edu.ng/work/view/antibacterial-and-phytochemical-activities-of-moringa-oleifera-on-bacteria-causing-wound-infection-and-gastroenteritis-7-2. Accessed 24 Nov. 2024.
ELUWA, ELUWA. "Antibacterial And Phytochemical Activities Of Moringa Oleifera On Bacteria Causing Wound Infection And Gastroenteritis". Mouau.afribary.org, Mouau.afribary.org, 16 Dec. 2022. Web. 24 Nov. 2024. < https://repository.mouau.edu.ng/work/view/antibacterial-and-phytochemical-activities-of-moringa-oleifera-on-bacteria-causing-wound-infection-and-gastroenteritis-7-2 >.
ELUWA, ELUWA. "Antibacterial And Phytochemical Activities Of Moringa Oleifera On Bacteria Causing Wound Infection And Gastroenteritis" Mouau.afribary.org (2022). Accessed 24 Nov. 2024. https://repository.mouau.edu.ng/work/view/antibacterial-and-phytochemical-activities-of-moringa-oleifera-on-bacteria-causing-wound-infection-and-gastroenteritis-7-2