TITLE:
Evaluation of Acacia sieberiana var. Woodii (Fabaceae) Aqueous Extract as a Natural Bactericidal Agent for Water Treatment against Pathogenic Bacteria
AUTHORS:
Golda Reine Zame Meva’a, Luciane Marlyse Moungang, Roland Ndifor Ache, Eric Donald Mbo Zang, Moïse Nola
KEYWORDS:
Aqueous Extract, Antibacterial Activity, Acacia sieberiana, Pathogenic Bacteria, Water Treatment
JOURNAL NAME:
Journal of Biosciences and Medicines,
Vol.13 No.8,
August
15,
2025
ABSTRACT: Contaminated water poses a risk to public health, particularly in regions relying on untreated sources. This study investigates the antibacterial potential of aqueous leaf extracts from Acacia sieberiana against Streptococcus faecalis and Salmonella typhi in simulated water systems. Bacterial suspensions were exposed to four extract concentrations (0.5 - 2 g/L) at 7˚C and 23˚C for 3, 6, 9 and 24 hours. MIC, and MBC were then determined. The extract lowered CFU values in a dose and time dependent manner. Complete inhibition of Salmonella typhi was achieved at ≥1.5 g/L within 3 hours. The aqueous extract of Acacia sieberiana significantly reduces the cultivability of the bacterial abundances of the two strains tested. In addition, S. typhi was the most sensitive bacterium to this plant extract. The temperature of the medium did not significantly influence bacterial inhibition (P > 0.05). The aqueous extract of Acacia sieberiana exhibited a bactericidal effect on the cultivability of these straing with MICs varying from 7.81 to 15.62 mg/mL. The results of the present study support the use of A. sieberiana in the treatment of pathogenic infections as well as reduction of the flux of bacteriopollutants in water.