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Relevance of microbial interactions to predictive microbiology
- Source :
- International Journal of Food Microbiology, 84, 263-272, International Journal of Food Microbiology 84 (2003)
- Publication Year :
- 2003
- Publisher :
- HAL CCSD, 2003.
-
Abstract
- Microbial interaction can be ignored in predictive microbiology under most conditions. We show that interactions are only important at high population densities, using published data on inhibition of growth of Listeria monocytogenes in broth. Our analysis using growth models from predictive microbiology indicated that interactions only occur at population densities of ∼108 cfu/ml of the protective cultures. Spoilage is evident at these levels, except for fermented foods. In bacterial colonies, diffusion limitation acts as a constraint to growth. We have shown that these constraints only become important after large outgrowth of colonies (in the order of 5-log growth in Lactobacillus curvatus colonies), which depends on the initial inoculation density. Intra-colony interactions play an important role under these conditions. There is no large outgrowth of colonies when the initial inoculation densities are high and broth culture growth can be used to approximate colony growth. © 2002 Elsevier Science B.V. All rights reserved. Chemicals/CAS: Culture Media
- Subjects :
- Food spoilage
Colony Count, Microbial
Density
lactic-acid
Bacterial growth
medicine.disease_cause
Levensmiddelenmicrobiologie
Diffusion
Sectie Proceskunde
chemistry.chemical_compound
Sub-department of Food and Bioprocess Engineering
Intra-colony interactions
Microbial interactions
lactobacillus-curvatus
Lactobacillus
Colony growth
Bacteria (microorganisms)
Predictive microbiology
biology
food and beverages
Culture medium
General Medicine
Food control
Growth inhibition
mixed cultures
Prediction and forecasting
Listeria
growth
Growth, development and aging
scott-a
Broth cultures
Bacterium colony
Models, Biological
Microbiology
Food technology
Inoculation
Listeria monocytogenes
Predictive Value of Tests
Bacterial count
lactococcus-lactis
medicine
Food microbiology
Nutrition Biology
Food Process Engineering
VLAG
Population Density
model
Bacterium culture
Nonhuman
biology.organism_classification
Culture Media
chemistry
Fermented product
Biological model
Lactobacillus curvatus
Food Microbiology
nisin
bacterial colonies
[SDV.SPEE.SA.CM] Life Sciences [q-bio]/Santé publique et épidémiologie/domain_sdv.spee.sa/domain_sdv.spee.sa.cm
Prediction
listeria-monocytogenes
Controlled study
Analysis
Model
Food Science
Subjects
Details
- Language :
- English
- ISSN :
- 01681605
- Database :
- OpenAIRE
- Journal :
- International Journal of Food Microbiology, 84, 263-272, International Journal of Food Microbiology 84 (2003)
- Accession number :
- edsair.doi.dedup.....0c19fdbd22f369a48ce3360e333baec1