ACID-BILE TOLERANCE AND ANTIMICROBIAL PROPERTIES OF SOME LACTOBACILLUS SPECIES ISOLATED FROM FERMENTED MILK PRODUCTS
ABTSRACT
Acid-bile tolerance and
antibacterial properties of some Lactobacillus species were studied. Milk
products (Nunu, Fan milk and Yoghurt) were plated on De-Mann Rogosa Sharpe
(MRS) agar and incubated for 24 hours. The Lactobacillus
species isolated were L. acidophilus, L. bulgaricus, L. casei and L. plantarum with the occurrence range
of (100%), (66%), (33%) and (33.3%) respectively. The Lactobacillus isolates were analyzed for their antimicrobial
activity against some test pathogenic organisms such as Staphylococcus sp, Pseudomonas
sp, Escherichia coli, Candida sp
and Aspergillus sp. Antimicrobial
activity of Lactobacillus isolates
against the test organisms mentioned earlier ranged from 12.33 ± 1.15mm to
21.00 ± 2.00mm for Lactobacillus
acidophilus, 11.69 ± 1.15mm to 12.67 ± 0.58mm for L. bulgaricus, 10.67 ± 1.15mm to 22.67 ± 1.15mm for L. casei and 9.67 ± 1.15mm to 15.67 ±
1.15mm for L. plantarum. This result
showed L. bulgaricus to be least
active against Pseudomonas sp with
inhibition zone of 8.67 ± 0.58mm while L.
casei showed the highest activity against Aspergillus sp. The acid-bile tolerance
ability of the different Lactobacillus isolates
was tested and the results show varying levels of the ability of the isolates
to thrive in acid and bile environment.
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CHINENYE, M (2020). ACID-BILE TOLERANCE AND ANTIMICROBIAL PROPERTIES OF SOME LACTOBACILLUS SPECIES ISOLATED FROM FERMENTED MILK PRODUCTS. Mouau.afribary.org: Retrieved Sep 19, 2024, from https://repository.mouau.edu.ng/work/view/acid-bile-tolerance-and-antimicrobial-properties-of-some-lactobacillus-species-isolated-from-fermented-milk-products
MOUAU/11/20691, CHINENYE. "ACID-BILE TOLERANCE AND ANTIMICROBIAL PROPERTIES OF SOME LACTOBACILLUS SPECIES ISOLATED FROM FERMENTED MILK PRODUCTS" Mouau.afribary.org. Mouau.afribary.org, 06 May. 2020, https://repository.mouau.edu.ng/work/view/acid-bile-tolerance-and-antimicrobial-properties-of-some-lactobacillus-species-isolated-from-fermented-milk-products. Accessed 19 Sep. 2024.
MOUAU/11/20691, CHINENYE. "ACID-BILE TOLERANCE AND ANTIMICROBIAL PROPERTIES OF SOME LACTOBACILLUS SPECIES ISOLATED FROM FERMENTED MILK PRODUCTS". Mouau.afribary.org, Mouau.afribary.org, 06 May. 2020. Web. 19 Sep. 2024. < https://repository.mouau.edu.ng/work/view/acid-bile-tolerance-and-antimicrobial-properties-of-some-lactobacillus-species-isolated-from-fermented-milk-products >.
MOUAU/11/20691, CHINENYE. "ACID-BILE TOLERANCE AND ANTIMICROBIAL PROPERTIES OF SOME LACTOBACILLUS SPECIES ISOLATED FROM FERMENTED MILK PRODUCTS" Mouau.afribary.org (2020). Accessed 19 Sep. 2024. https://repository.mouau.edu.ng/work/view/acid-bile-tolerance-and-antimicrobial-properties-of-some-lactobacillus-species-isolated-from-fermented-milk-products