| Shelf life of ground beef patties treated by gamma radiation. | |
| | |
MedLine Citation:
|
PMID: 9798162 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The effects of irradiation on microbial populations in ground beef patties vacuum package and irradiated frozen at target doses of 0.0, 1.0, 3.0, 5.0, and 7.0 kGy were determined. Irradiated samples were stored at 4 or -18 degrees C for 42 days, and mesophilic aerobic plate counts (APCs) were periodically determined. Fresh ground beef (initial APC of 10(2) CFU/g) treated with 3.0, 5.0, and 7.0 kGy was acceptable (< 10(7) CFU/g) for 42 days at 4 degrees C. The 1.0 kGy-treated beef samples were acceptable microbiologically (< 10(7) CFU/g) after 42 days but developed an unacceptable off-odor after 21 days. Shelf life diminished in fresh ground beef patties with an initial APC of 10(4) CFU/g. Only beef patties treated with 7.0 kGy were found to be acceptable at 42 days. Beef patties treated at 1.0 and 3.0 kGy reached spoilage APC levels (> 10(7) CFU/g) by day 14 and 21, respectively, whereas patties treated at 5.0 kGy did not spoil until 42 days. The nonirradiated control samples for both batches of ground beef spoiled within 7 days. Microbial counts in ground beef patties stored at -18 degrees C did not change over the 42-day period. Shelf life of ground beef patties stored at 4 degrees C may be extended with gamma radiation, especially at 5.0 and 7.0 kGy. Initial microbial load in ground beef samples was an important shelf life factor. |
| | |
Authors:
|
W T Roberts; J O Weese |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of food protection Volume: 61 ISSN: 0362-028X ISO Abbreviation: J. Food Prot. Publication Date: 1998 Oct |
Date Detail:
|
Created Date: 1999-01-08 Completed Date: 1999-01-08 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7703944 Medline TA: J Food Prot Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1387-9 Citation Subset: IM |
Affiliation:
|
Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, Blacksburg 24061-0430, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Cattle Colony Count, Microbial Enterobacteriaceae / growth & development, isolation & purification Food Irradiation* Food Packaging Gamma Rays* Meat Products / microbiology*, radiation effects* Meat-Packing Industry Refrigeration Staphylococcus aureus / growth & development, isolation & purification Time Factors Vacuum |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Characterization of staphylococcal bovine mastitis isolates using the polymerase chain reaction.
Next Document: Susceptibility of antibiotic-resistant and antibiotic-sensitive foodborne pathogens to acid anionic ...