Injury and Lethality of Heat Treatment of Bacillus cereus Spores Suspended in Buffer and in Poultry Meat
| Autor: | Christine Faille, Véronique Lebret, Jean-François Maingonnat, Françoise Gavini |
|---|---|
| Přispěvatelé: | Laboratoire de Génie des Procédés et Technologie Alimentaires (LGPTA), Institut National de la Recherche Agronomique (INRA), Unité de recherche d'Écologie et Physiologie du Système Digestif (UEPSD), ProdInra, Migration |
| Rok vydání: | 2019 |
| Předmět: |
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering
[SDV]Life Sciences [q-bio] Bacillus cereus Microbiology 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology [SDV.IDA]Life Sciences [q-bio]/Food engineering [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Food science ComputingMilieux_MISCELLANEOUS 2. Zero hunger 0303 health sciences Bacillaceae biology 030306 microbiology fungi 04 agricultural and veterinary sciences [SDV.IDA] Life Sciences [q-bio]/Food engineering biology.organism_classification 040401 food science Bacillales Spore [SDV] Life Sciences [q-bio] chemistry Germination Lysozyme Bacteria Nutrient agar Food Science |
| Zdroj: | Journal of Food Protection Journal of Food Protection, International Association for Food Protection, 1997, 60 (5), pp.544-547 |
| ISSN: | 1944-9097 0362-028X |
| Popis: | The effect was studied of supplementing the recovery medium with lysozyme, glucose, NaCl, and MgSO4 on the apparent heat resistance of four strains of Bacillus cereus. The composition of an optimal medium (allowing the germination and growth of all surviving spores) and of a selective medium (inhibiting injured spores) was then determined: the optimal medium consisted of nutrient agar supplemented with 50 × 10−6 g of lysozyme and 0.5 g of MgSO4 per liter. The selective medium had the same composition but was supplemented with 15 g of NaCl per liter. The injury and lethality were analyzed of heat treatment of spores of four Bacillus cereus strains in phosphate buffer and in mechanically separated poultry meat. The four strains tested exhibited great differences in injury and death rates, and considerable differences could be observed in survivor counts when spores were suspended in buffer or in meat. Moreover, variability in behavior when the strains were heat treated in buffer could not be extrapolated to... |
| Databáze: | OpenAIRE |
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