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ABSTRACT
This study was carried out to evaluate the antibacterial activity of Tetrapluera tetrapthera (gum tree) leaf extract combination against enteric Bacteria in ready to eat suya. Twenty four Suya samples (12 unsmoked and 12 smoked) were obtained were obtained from 4 different locations in Benin City. Standard microbiological method was used for isolation and enumeration of enteric bacteria. The bacteria were identified using cultural and biochemical technique. Maceration/decoction method was used for extraction of leaves of T. tetraptera using 70% ethanol solvent. The qualitative screening showed that leaves of T. tetraptera had saponins, alkaloids, terpenoids, phenols and glycosides. Kirby Bauer disk diffusion test was used for evaluating the antibacterial sensitivity of plant extract against the enteric bacterial isolates. The results revealed that the total coliform count for unsmoked Suya sample ranged from logo 2.06 0.08 cfu/g to logo 3.92 0.01 cfu/g. While the total coliform count for smoked Suya sample ranged from log, 1.0 0.00 cfu/g to logo 2.91 0.01 cfu/g. The identified enteric bacterial isolates include; Escherischia coli, Klebsiella oxytoca, Enterobacter aerogenes and Morganella sp. The Antibacterial sensitivity result using Tetrapluera tetrapthera (gum tree) leaf extract and antibiotics combination showed that the zones of inhibition for the Klebsiella oxytoca, Morganella sp. and E.coli to be 7.00mm, 45.0mm and 10.00mm respectively. Enterobacter show no sensitivity to Tetrapleura tetraptera extract and antibiotics combination. The MIC of the extract for E.coli and Klebsiella oxytoca were 50% concentration. The extract had no bactericidal effect on the isolated enteric bacteria. This study emphasizes the value of following good hygiene and food safety procedures when preparing and eating ready-to-eat suya. It draws attention to Tetrapleura tetraptera leaf extract's potential as organic antibacterial agents against enteric bacteria and suggests they might be used in food preservation techniques.
