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Year

1980

Title

An inproved selective and diagnostic medium for the isolation and enumeraton of Bacillus cereus in foods

Source

Can. J. Microbiol. 26,753-759. 1980.

Abstract

‚ÄčThe use and performance of an improved diagnostic and selective medium, PEMBA (polymyxin pyruvate egg yolk mannitol bromothymol blue agar), for the detection of Bacillus cereus in foods is described. The distinct colonial appearance of B. cereus on PEMBA permitted the recognition of both strains: those that do precipitate egg yolk and those that do not react with egg yolk. A staining procedure, used to demonstrate microscopically both the presence of lipid globules in vegetative cells and spore morphology of isolates, proved a rapid and reliable confirmatory test which gave complete agreement with a battery of biochemical tests used for this purpose. The quantitative recovery of B. cereus on PEMBA from 143 food samples was not significantly different from counts on KG (Kim and Goepfert), MYP (mannitol egg yolk phenol red), and McClung's media, and the selectivity of PEMBA was generally superior.

Authors

Holbrook R.;Anderson Judith M.

Keywords

bacillus, cereus, method

Interest Groups

INFOCRIS

Attachments

Created at 19/03/2013 11:19 by System Account
Last modified at 08/08/2013 20:18 by Abdeljelil Bakri