METHODS FOR THE ISOLATION OF FAECAL STREPTOCOCCI (LANCEFIELD GROUP D) FROM BACON FACTORIES

Wiley - Tập 19 Số 2 - Trang 193-203 - 1956
Ella M. Barnes1
1Low Temperature Station for Research in Biochemistry and Biophysics, University of Cambridge,and Department of Scientific and Industrial Research

Tóm tắt

SUMMARY: Two methods have been developed for isolating and enumerating group D faecal streptococci from localities such as bacon factories where they are heavily outnumbered by other organisms. The first depends on presumptive counts in a Lab‐Lemco‐peptone‐glucose broth (pH 6·0) containing 0·1% of thallous acetate with confirmation by streaking on tetrazolium agar. The other method involves direct plating on tetrazolium‐glucose agar (pH 6·0) containing 0·1% of thallous acetate. On the tetrazolium medium differentiation can be made between Streptococcus faecalis and its variants zymogenes and liquefaciens and the other group D organisms, Strep. faecium, Strep. durans and Strep. bovis.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Wiley

Tập 19 Số 2

193-203

Thông tin tác giả