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[Study of enterococci in milk]

I Gogov

    Veterinarno-Meditsinski Nauki
    |January 1, 1975
    PubMed
    Summary

    Enterococcus and coli titers were analyzed in raw and pasteurized milk. Enterococcus titers can supplement coli titers for stricter bacteriologic control but should not replace them in milk hygiene evaluations.

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    Area of Science:

    • Food Microbiology
    • Dairy Science
    • Public Health Bacteriology

    Background:

    • Enterococci and coliforms are key indicators of milk hygiene.
    • Assessing microbial load in milk is crucial for consumer safety.
    • Variations in enterococcus and coli titers can indicate processing and storage impacts.

    Purpose of the Study:

    • To determine enterococcus and coli titers in raw and pasteurized milk.
    • To evaluate the correlation between enterococcus and coli titers under different storage conditions.
    • To assess the potential of enterococcus titer as a supplementary hygiene indicator.

    Main Methods:

    • Analysis of 270 milk samples (raw and pasteurized).
    • Determination of enterococcus and coli titers.
    • Microbiological testing under various storage conditions (refrigerated and room temperature).

    Main Results:

    • Enterococcus titers in raw milk ranged from 10(-3) to 10(-6).
    • Pasteurized milk showed enterococcus titers from 1 to 10(-3) post-processing and distribution.
    • Enterococcus titers correlated with coli titers only in refrigerated pasteurized milk.
    • Str. faecium (43.2%) and Str. faecalis (24.6%) were the predominant enterococci species.

    Conclusions:

    • Enterococcus titer can serve as a supplementary indicator for milk hygiene control.
    • It is not a sole replacement for coli titer in milk hygiene assessments.
    • Enterococci are consistently present in both raw and pasteurized milk, with specific strains dominating.

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