title: Shelf life prediction of fresh Italian pork sausage modified atmosphere packed.
abstract: The shelf life of fresh Italian pork sausages packed in modified atmosphere was studied. Samples were packed using different levels of oxygen (high and low) with different levels of carbon dioxide (high-low) in the atmospheres headspace and were stored at 4 °C for 9 days. Microbial, physiochemical and sensory parameters were analyzed during storage. A consumer test was performed to determine the critical acceptability levels. Sensory data were mathematically modelled to estimate product shelf life. A first-order kinetic model and a Weibull-type model aptly described, respectively, the changes in fresh pork sausage odor and color over storage time. These models may be used to predict the sensory shelf life of fresh pork sausage. Results showed that 20% O(2) and 70% CO(2) extend fresh pork sausage shelf life to 9 days at 4 °C. The microbial quality of the samples at the critical sensory level of acceptability was within the range of microbial acceptability.
authors.affiliation: Department of Food Science, University of Naples Federico, 80055 Portici, Italy. elena.torrieri@unina.it
authors.forename: E
authors.initials: E
authors.lastname: Torrieri
authors.forename: F
authors.initials: F
authors.lastname: Russo
authors.forename: R
authors.initials: R
authors.lastname: Di Monaco
authors.forename: S
authors.initials: S
authors.lastname: Cavella
authors.forename: F
authors.initials: F
authors.lastname: Villani
authors.forename: F
authors.initials: F
authors.lastname: Masi
mesh_terms: D000818:Animals; D001272:Atmosphere; D002245:Carbon Dioxide / Q000737:chemistry; D003258:Consumer Behavior; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods*; D005519:Food Preservation / Q000379:methods*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008461:Meat Products / Q000382:microbiology*; D009812:Odorants; D013552:Swine; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide