Development of a repair-enrichment broth for resuscitation of heat-injured Listeria monocytogenes and Listeria innocua
Article Abstract:
The influence of different medium components in repairing heat-injured populations of Listeria monocytogenes and Listeria innocua was evaluated. The supplements were added to trypticase soy broth used as medium to Listeria populations which were heat-injured for 50 minutes at 56 degrees centigrade. The medium components which provided the optimal degree of recovery were yeast extract; catalase; pyruvate; the carbohydrates sucrose, lactose and glucose; and the divalent cations magensium and iron. Listeria repair broth was concocted from these supplements and was found to be more effective than the other selective enrichment broths.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Modelling bacterial growth of Lactobacillus curvatus as a function of acidity and temperature
Article Abstract:
Combination of models for growth parameters of Lactobacillus curvatus suggests the multiplication of the effect of temperature on specific growth rate involving the effect of water activity. The multiplication of temperature and acidity effect shows that minimum pH at which the growth takes place is a function of temperature. The measurement of lag time indicated large deviations suggesting that lag time models can be used to determine the order of magnitude lag time.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Model for the combined effects of temperature, pH, and sodium lactate on growth rates of Listeria innocua in broth and Bologna-type sausages
Article Abstract:
A modified Monod equation is used in a mathematical model to study the effects of temperature, pH level and sodium lactate on the microbial growth rate of Listeria innocua in broth and Bologna-type sausages. The model is employed to analyze the antimicrobial activity of sodium lactate with respect to temperature and pH. The computed results show good agreement with existing experimental data.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: A nucleic acid sequence-based amplification system for detection of Listeria monocytogenes hlyA sequences. Cloning and characterization of a gene encoding a secreted tripeptidyl aminopeptidase from Streptomyces lividans 66
- Abstracts: Development of a PCR protocol for sensitive detection of Cryptosporidium oocysts in water samples. Simplified method for recovery and PCR detection of Cryptosporidium DNA from bovine feces
- Abstracts: Development of a sensitive chemiluminometric assay for the detection of beta-galactosidase in permeabilized coliform bacteria and comparison with fluorometry and colorimetry
- Abstracts: Phylogenetic position of yeastlike endosymbionts of anobiid beetles. Novel group within the kingdom Crenarchaeota from boreal forest soil
- Abstracts: Identification of Pasteurella multocida tryptophan synthase beta-subunit by antisera against strain P1059. The 32 kDa major outer-membrane protein of Pasteurella multocida capsular serotype D