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Characterization and determination of the potential probiotic yeasts isolated from dairy products

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Abstract

54 yeast strains were isolated from dairy products. The isolates were assessed for their probiotic potential and enzyme production. 15 strains survived low pH, bile salt, temperature, acids and salt concentrations. The strains belonged to Kluyveromyces, Pichia, Candida, Debaryomyces and Wickerhamomyces genera. The yeast strains also exhibited antagonistic activity against at least two pathogens. The strongest antagonistic activity was exerted by Wickerhamomyces anomalus TEM-KMZ3 and Pichia kudriavzevii TEM-AP3 against Escherichia coli O157:H7 RSSK 234 and Listeria monocytogenes ATCC 19115 with zones of inhibition equivalent to 14 and 26 mm, respectively. Almost all of the yeast strains demonstrated resistance against different classes of antibiotics. All the tested yeasts were catalase-positive. The highest extracellular enzyme production was recorded by Wickerhamomyces anomalus (TEM-KMZ3, TEM-KM1, TEM-FPP2, and TEM-FPP5), Candida zeylanoides TEM-G1M, and Debaryomyces hansenii TEM-KK3 which indicates the potential application of these isolates in food and feed industries.

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Abbreviations

WHO:

World Health Organization

FAO:

Food and Agriculture Organization of the United Nations

MGYPB:

Malt Glucose Yeast Peptone Broth

MGYPA:

Malt Glucose Yeast Peptone Agar

CFU:

Colony Forming Unit

EAI:

Enzymatic Activity Index

PDA:

Potato Dextrose Agar

PCR:

Polymerase Chain Reaction

SPR:

Subtree-Pruning-Regrafting

NCBI:

National Center for Biotechnology Information

GIT:

Gastrointestinal Tract

bp:

Base pair

LA:

Lactic Acid

AA:

Acetic Acid

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Acknowledgements

This work was supported by the Scientific Research Unit of Ege University under grant 2016-Fen-014.

Funding

This study was funded by the Scientific Research Unit of Ege University (Project number: 2016-Fen-014).

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Correspondence to Hüsniye Tansel Yalçın.

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Gürkan Özlü, B., Terzi, Y., Uyar, E. et al. Characterization and determination of the potential probiotic yeasts isolated from dairy products. Biologia 77, 1471–1480 (2022). https://doi.org/10.1007/s11756-022-01032-8

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  • DOI: https://doi.org/10.1007/s11756-022-01032-8

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