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Literature DB >> 5335384

Beta-galactosidase for distinguishing between Citrobacter and Salmonella.

Abstract

Detection of beta-galactosidase with the aid of o-nitrophenyl-beta-d-galactopyranoside (ONPG) was examined as a means for distinguishing between Citrobacter and Salmonella. Several factors which influence sensitivity and reliability of the test were studied. A bacteriostat, sodium azide, was included to permit prolonged incubation of weak and negative strains of enteric bacilli. By the procedure described, salmonellae gave negative ONPG tests; all of 171 strains of Citrobacter gave positive tests.

Entities: Chemical Gene

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Year: 1966 PMID： 5335384 PMCID： PMC546646 DOI： 10.1128/am.14.2.178-182.1966

Source DB: PubMed Journal: Appl Microbiol ISSN： 0003-6919

12 in total

3. Selective inhibition of Escherichia coli in the presence of Salmonella typhimurium by phenethyl beta-D-galactopyranoside.

Authors: M A Johnston; F S Thatcher
Journal: Appl Microbiol Date: 1967-09

4. Salmonella screening procedure with tests for beta-galactosidase and flagellar antigens.

Authors: C R Wilson; A P Padron; W B Dockstader
Journal: Appl Microbiol Date: 1971-02

4 in total

Beta-galactosidase for distinguishing between Citrobacter and Salmonella.

1. beta-Galactosidase of Paracolobactrum aerogenoides.

2. THE ONPG TEST IN DIAGNOSTIC BACTERIOLOGY. METHODOLOGICAL INVESTIGATIONS.

3. THE ONPG TEST IN DIAGNOSTIC BACTERIOLOGY. COMPARISON OF THE ONPG TEST AND THE CONVENTIONAL LACTOSE-FERMENTATION TEST.

4. [On the differential diagnosis of Salmonella sub-genera I, II and III].

5. [Observations on beta-galactosidase detection in the genus Shigella].

6. Screening for salmonella with bacteriophage.

7. Activity determination of amino acid decarboxylases in Enterobacteriaceae.

8. Diagnostic use of the Braun KCN test within the Enterobacteriaceae.

9. The rapid detection of lactose fermentation in paracolon organisms by the demonstration of beta-D-galactosidase.

10. BETA-GALACTOSIDASE AND LACTOSE FERMENTATION IN THE IDENTIFICATION OF ENTEROBACTERIA INCLUDING SALMONELLAE.

1. Identification of Enterobacteriaceae in the clinical microbiology laboratory.

2. Delayed lactose fermentation by enterobacteriaceae.

3. Selective inhibition of Escherichia coli in the presence of Salmonella typhimurium by phenethyl beta-D-galactopyranoside.

4. Salmonella screening procedure with tests for beta-galactosidase and flagellar antigens.