AEM
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Sveum, W. H.
Right arrow Articles by Hartman, P. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sveum, W. H.
Right arrow Articles by Hartman, P. A.
Agricola
Right arrow Articles by Sveum, W. H.
Right arrow Articles by Hartman, P. A.

 Previous Article  |  Next Article 

Appl Environ Microbiol. 1977 March; 33(3): 630-634
Copyright © 1977 American Society for Microbiology. All Rights Reserved.

Timed-Release Capsule Method for the Detection of Salmonellae in Foods and Feeds 1

William H. Sveum2 and Paul A. Hartman

a Department of Bacteriology, Iowa State University, Ames, Iowa 50011

ABSTRACT

A new method was developed for the detection of injured and uninjured salmonellae in foods and feeds. The steps of pre-enrichment in a nonselective broth and selective enrichment in a selective medium were combined into a single procedure. This was achieved by the gradual release of selective agents from wax-coated gelatin capsules added at the time of inoculation of nonselective basal broths. Pre-enrichment in lactose broth was combined with selective enrichment in tetrathionate or selenite-cystine broth by using timed-release capsules containing iodine or selenite. Five different categories of foods and feeds, naturally contaminated with salmonellae, were examined to compare the efficiencies of the capsule methods with conventional procedures. Combination of the separate steps of pre-enrichment and selective enrichment into a single procedure was feasible and resulted in substantial savings of labor and materials.

FOOTNOTES

2 Present address: Department of Food Technology, Iowa State University, Ames, IA 50011.

1 Journal paper no. J-8634 of the Iowa Agriculture and Home Economics Experiment Station, Ames; project no. 2018.

Appl Environ Microbiol. 1977 March; 33(3): 630-634
Copyright © 1977 American Society for Microbiology. All Rights Reserved.





Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Microbiol. Mol. Biol. Rev. Eukaryot. Cell All ASM Journals

Copyright © 1977 by the American Society for Microbiology. All rights reserved.