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Screening of antibiotic-producing bacteria isolated from soil gotten within gaba, Bwari FCT, Abuja

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Azode V. U., Anyaegbunam B. C.
World News of Natural Sciences
|
2023
|
vol. 51
61-69
EN
This investigation seeks to determine the antibiotic-producing potential of bacteria in inhibiting the growth of other organisms like Staphylococcus aureus and Escherichia coli. The bacterial isolates were identified using standard cultural, morphological, and biochemical characterization. These were further screened for their antibiotic-producing potential using the Mueller Hinton agar (MHA) media. The identified bacterial isolates had a mean viable count ranging between 1.38×106 / 1,380,000 cfu/ml and 1.52×106 / 1,520,000 cfu/ml. Micrococcus roseus, Brevibacterium species, Bacillus subtilis, Bacillus anthracis, and Bacillus cereus were the predominant bacterial isolates. Nonetheless, the antibiotic test revealed that Bacillus subtilis and Bacillus anthracis showed antimicrobial activity against S. aureus, whereas Bacillus anthracis, Bacillus cereus, and Bacillus subtilis showed zones of inhibition against E. coli. This study shows that Bacillus species have the potential to produce antibiotics and can be used to control microbial growth in the future.
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