| Autor: |
Juan L. Silva, T. D. White |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Journal of Food Protection. 57:715-719 |
| ISSN: |
0362-028X |
| DOI: |
10.4315/0362-028x-57.8.715 |
| Popis: |
Channel catfish ( Ictalurus punctatus ) fillet strips were packaged under aerobic (AIR), 25% carbon dioxide (CO2) (LC) and 80% CO2 (HC) environments with the remainder being air; and stored at 2 and 8°C for 4 weeks. Aerobic plate counts (APC) for HC fish at 2°C declined from 6 log CFU/g to 1.4 log CFU/g after 2 weeks but increased to 5 log CFU/g by the third week. The HC-stored strips at 8°C had an initial increase in APC followed by a decline to 1.4 log CFU/g on the third week, and a rise to 9 log CFU/g by the fourth week. Aerobic plate counts in AIR- and LC-packed fish at either temperature increased steadily throughout storage. Fish surface pH declined in HC-packed product from 6.2 to 5.6 by the fourth week, but did not change in LC and AIR packs. Hunter L-values increased in CO2-packed products, while Hunter a-values decreased. Listeria monocytogenes was isolated from fish under LC and AIR at 8°C in the second and third weeks. Salmonella spp. was present in fish stored in all storage atmospheres at 8°C, but only in AIR-packed fish at 2°C. Clostridium botulinum was not found in product at any of the storage atmospheres at either temperature at any time. The best treatment was fish packed in HC and stored at 2°C. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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