title: Predictive models as means to quantify the interactions of spoilage organisms.
abstract: The purpose of this paper is to quantify the interactions of some groups of spoilage organisms that can be usually found in refrigerated meat stored in air, such as: Enterobacteriaceae, Pseudomonas, Acinetobacter, Psychrobacter, Shewanella, Carnobacterium, Lactobacillus, Leuconostoc, Brochothrix and Kurthia spp. The growth of these organisms was studied in the range of temperature 2-11 degrees C and pH 5.2-6.4, which is characteristic of refrigerated meat. The main growth parameters (maximum specific growth rate and lag time) were modelled by multivariate quadratic polynomials of temperature and pH. The interactions of the organisms were analyzed by comparing their growth models obtained in isolation with those obtained in mixture. The difference between the models was quantified by statistical F-values which were used to measure how much the growth of an organism or group of organisms was affected by others and which of them dominated their joint growth.
authors.affiliation: Institute of Food Research Reading Laboratory Earley Gate, Reading, UK.
authors.forename: C
authors.initials: C
authors.lastname: Pin
authors.forename: J
authors.initials: J
authors.lastname: Baranyi
mesh_terms: D001419:Bacteria / Q000254:growth & development* / Q000378:metabolism; D003470:Culture Media; D004755:Enterobacteriaceae / Q000254:growth & development / Q000378:metabolism; D005516:Food Microbiology; D005519:Food Preservation; D005544:Forecasting; D006863:Hydrogen-Ion Concentration; D007778:Lactobacillus / Q000254:growth & development / Q000378:metabolism; D008954:Models, Biological; D015999:Multivariate Analysis; D011549:Pseudomonas / Q000254:growth & development / Q000378:metabolism; D013696:Temperature
chemical_list: D003470:Culture Media