title: Predictive model for the growth of spoilage bacteria on modified atmosphere packaged Atlantic salmon produced in Australia.
abstract: Most existing models for the spoilage of modified atmosphere packed Atlantic salmon are based on the growth of the spoilage organism Photobacterium phosphoreum. However, there is evidence that this organism is not the specific spoilage organism on salmon produced and packaged in Australia. We developed a predictive model for the growth of bacteria in Australian-produced Atlantic salmon stored under modified atmosphere conditions (30-98% carbon dioxide in nitrogen) at refrigeration temperatures (0-10 °C). As expected, both higher levels of carbon dioxide and lower temperatures decreased the observed growth rates of the total population. A Bělehrádek-type model for growth rate fitted the data best with an acceptably low root mean square error. At low temperatures (∼0 °C) the growth rates in this study were similar to those predicted by other models but at higher temperatures (∼10 °C) the growth rates were significantly lower in the current study.
authors.affiliation: Australian Seafood Cooperative Research Centre and School of Land and Food, University of Tasmania, Private Bag 54, Hobart, Tasmania, Australia. Electronic address: shane.powell@utas.edu.au.
authors.forename: S M
authors.initials: SM
authors.lastname: Powell
authors.affiliation: School of Land and Food, University of Tasmania, Private Bag 54, Hobart, Tasmania, Australia.
authors.forename: D A
authors.initials: DA
authors.lastname: Ratkowsky
authors.affiliation: Australian Seafood Cooperative Research Centre and School of Land and Food, University of Tasmania, Private Bag 54, Hobart, Tasmania, Australia.
authors.forename: M L
authors.initials: ML
authors.lastname: Tamplin
mesh_terms: D000818:Animals; D001315:Australia; D001419:Bacteria / Q000254:growth & development*; D002245:Carbon Dioxide; D003080:Cold Temperature; D015169:Colony Count, Microbial; D005516:Food Microbiology; D018857:Food Packaging; D005519:Food Preservation; D015233:Models, Statistical; D009584:Nitrogen; D010776:Photobacterium / Q000254:growth & development*; D020317:Salmo salar / Q000382:microbiology*
chemical_list: D002245:Carbon Dioxide; D009584:Nitrogen
keywords: Carbon dioxide; Salmo salar; Specific growth rate