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Occurrence of variants sensitive to agglutinins and to lactoperoxidase in a lactenin-resistant strain of Streptococcus lactis

Published online by Cambridge University Press:  01 June 2009

J. Auclair  and
Yvonne Vassal
J. Auclair
Affiliation:
Station Centrale de Microbiologie et Recherches Laitières, Jouy-en-Josas, France
Yvonne Vassal
Affiliation:
Station Centrale de Microbiologie et Recherches Laitières, Jouy-en-Josas, France
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Summary

A strain of Streptococcus lactis, C10, known to be resistant to lactenins, was found to be composed of 47% resistant cells, 10% cells sensitive to lactoperoxidase and 43% cells sensitive to both agglutinins and lactoperoxidase. By subculturing a strain composed of 100% resistant cells in different conditions of medium, temperature and incubation time, it was possible to obtain cultures composed of resistant and sensitive cells in various proportions. These findings help to explain how, after numerous subculturings in autoclaved milk, a resistant strain may become sensitive to the natural inhibitors of milk.

Type
Original Articles
Information
Journal of Dairy Research , Volume 30 , Issue 3 , October 1963 , pp. 345 - 349
Copyright
Copyright © Proprietors of Journal of Dairy Research 1963

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References

REFERENCES

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