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Probiotic Potentials of Lactic Acid Bacteria and Yeasts from Raw Goat Milk in Nigeria
Probiotic microorganisms are incorporated in foods due to their numerous health benefits. We investigated lactic acid bacteria (LAB) and yeasts isolated from goat milk in Nigeria for novel probiotic strains. In this study, a total of 27 LAB and 23 yeast strains were assessed for their probiotic pote...
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Published in: | Probiotics and antimicrobial proteins 2024-02, Vol.16 (1), p.163-180 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Probiotic microorganisms are incorporated in foods due to their numerous health benefits. We investigated lactic acid bacteria (LAB) and yeasts isolated from goat milk in Nigeria for novel probiotic strains. In this study, a total of 27 LAB and 23 yeast strains were assessed for their probiotic potentials. Only six LAB strains (
Weissella cibaria
GM 93m3,
Weissella confusa
GM 92m1,
Pediococcus acidilactici
GM 18a,
Pediococcus pentosaceus
GM 23d,
Lactiplantibacillus pentosus
GM 102s4,
Limosilactobacillus fermentum
GM 30m1) and four yeast strains (
Candida tropicalis
12a,
C. tropicalis
33d,
Diutina rugosa
53b, and
D. rugosa
77a) identified using partial 16S and 26S rDNA sequencing, respectively, showed survival at pH 2.5, 0.3% bile salt, and simulated gastrointestinal conditions and possessed auto-aggregative and hydrophobic properties, thus satisfying key in vitro criteria as probiotics. All LAB strains showed coaggregation properties and antimicrobial activities against pathogens.
Pediococcus pentosaceus
GM 23d recorded the strongest coaggregation percentage (34–94%) against 14 pathogens, while
W. cibaria
GM 93m3 showed the least (6–57%) against eight of the 14 pathogens. The whole cell and extracellular extracts of LAB and yeast strains, with the exception of
D. rugosa
77a, had either 2,2-diphenyl-1-picryl-hydrazyl and/or hydroxyl radical scavenging activity. In conclusion, all six LAB and four yeast strains are important probiotic candidates that can be further investigated for use as functional starter cultures. |
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ISSN: | 1867-1306 1867-1314 |
DOI: | 10.1007/s12602-022-10022-w |