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Serological identification of Streptococcus salivarius subsp. thermophilus

Published online by Cambridge University Press:  01 June 2009

Maher A. Nour ,
Gamal Abdel-Tawab ,
Samir Shalaby  and
Osama A. Mohamed
Maher A. Nour
Affiliation:
Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
Gamal Abdel-Tawab
Affiliation:
Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
Samir Shalaby
Affiliation:
Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
Osama A. Mohamed
Affiliation:
Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
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Summary

Streptococcus salivarius subsp. thermophilus (Str. thermophilus) has no group-specific antigen. HC1 extracts of 551 strains of streptococci isolated from cheese or yogurt (123 Str. thermophilus and 428 Enterococcus faecalis – Ent. faecium spp.) were examined with three type-specific antisera prepared against representatives of Str. thermophilus and also with Lancefield group D antisera. All typical (80) or atypical (43) strains of Str. thermophilus reacted with at least one type-specific antiserum and none of the enterococci reacted. Only two strains reacted with both type-specific and group antisera.

Type
Original articles
Information
Journal of Dairy Research , Volume 56 , Issue 5 , November 1989 , pp. 779 - 783
Copyright
Copyright © Proprietors of Journal of Dairy Research 1989

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References

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