Potato-Like Odor of Retail Beef Cuts Associated with Species of Pseudomonas
| Autor: | R. L. Daise, R. J. Epley, Edmund A. Zottola |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
food.ingredient
biology Aerobic bacteria Litmus milk food and beverages Plate count agar biology.organism_classification medicine.disease_cause Microbiology Pseudomonas perolens Coliform bacteria chemistry.chemical_compound food Psychrotrophic bacteria chemistry medicine Agar Pseudomonas taetrolens Food Science |
| Zdroj: | Journal of food protection. 49(4) |
| ISSN: | 1944-9097 |
| Popis: | Retail cuts of beef and hamburger packages from a North Dakota meat processor were examined due to consumer complaints of a strong potato-like or musty odor associated with the meat. Examination for total numbers of aerobic bacteria on plate count agar and for gram-negative psychrotrophic bacteria on crystal violet tetrazolium agar revealed numbers in excess of 108 CFU/g. Numbers of coliform bacteria on violet red bile agar were in excess of 106 CFU/g. Gram-negative rods were isolated and identified. The isolates were characterized by a positive catalase reaction, oxidase production, an oxidative O/F reaction, nonutilization of lactose, liquefication of nutrient gelatin, slight motility, production of acid in litmus milk with decoloration and clotting, nonproduction of indole, and nonreduction of nitrate. The isolate was tentatively identified as a Pseudomonas of undetermined species, probably a variant of either Pseudomonas taetrolens or Pseudomonas perolens . |
| Databáze: | OpenAIRE |
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