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Journal of Medical Microbiology logo Journal of Medical Microbiology

Volume 43, Issue 1

Rambach agar and SM-ID medium sensitivity for presumptive identification of subspecies I–VI No Access

Abstract

Summary

The cultural characteristics of 112 serovars belonging to subspecies I–VI were examined on Rambach agar and SM-ID medium. Colonies showing the typical red coloration were seen with 100 of 112 serovars assayed on SM-ID, and with 87 of 112 on Rambach agar. Atypical colourless colonies were observed on Rambach agar with ONPG-negative serovars S. Choleraesuis, S. Isangi, S. Typhi S. Worthington and S. Yoff of the subspecies I, S. II 52:d:e, n, x, z of the subspecies II, 5. IV 6, 7: Z , z,:- and S. IV 11:g, z:-of the subspecies IV, and S. 40:z: belonging to 5. bongori (V) species. Atypical blue, blue-green, blue-violet or violet colonies were observed on both media with all the ONPG-positive serovars of the subspecies IIIa (four of four strains) and IIIb (six of six strains) and with one of the two ONPG-positive (out of five) strains of the subspecies VI. Four serovars of showed blue-green colonies on Rambach agar and typical red colonies on SM-ID, although they were all ONPG-positive. These results suggest that SM-ID medium is more sensitive than Rambach agar. However, the relatively low sensitivity of both media makes them suitable for use only in association with a traditional selective medium in both medical and environmental bacteriology, as well as for epidemiological purposes.

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© J. MED. MICROBIOL. 1995
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1995-07-01
2025-01-21
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Rambach agar and SM-ID medium sensitivity for presumptive identification of Salmonella subspecies I–VI
J. Med. Microbiol. 43, 68 (1995); https://doi.org/10.1099/00222615-43-1-68
/content/journal/jmm/10.1099/00222615-43-1-68
/content/journal/jmm/10.1099/00222615-43-1-68
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