title: Effect of high-oxygen and oxygen-free modified atmosphere packaging on the spoilage process of poultry breast fillets.
abstract: A comparison was made of the effect of atmospheres containing high oxygen (70% O2 and 30% CO2) or high nitrogen (70% N2 and 30% CO2) on the spoilage process during storage (at 4°C) of poultry fillets. Four samples of each gas atmosphere were analyzed at 7 sample points during storage. For this analysis, the growth of typical spoilage organisms (Brochothrix thermosphacta, Pseudomonas spp., Enterobacteriaceae, and Lactobacilli spp.) and total viable count (TVC) were analyzed and modeled by using the Gompertz function. Sensory analyses of the poultry samples were carried out by trained sensory panelists to analyze color, odor, texture, drip loss, and general appearance. The composition of the spoilage flora differed between the oxygen-free atmosphere and the high-oxygen atmosphere. Anaerobic conditions favored the growth of Lactobacilli spp., whereas aerobic gas composition favored the growth of B. thermosphacta. However, no significant difference (P<0.05) in TVC and sensory parameters were observed for poultry samples stored under a high-oxygen atmosphere in comparison to a high-nitrogen atmosphere. These results indicate that high-oxygen packaging has no additional beneficial effect on the quality maintenance and shelf life of fresh poultry fillets.
authors.affiliation: University of Bonn, Faculty of Agriculture, Institute of Animal Science, Cold-Chain Management Group, Katzenburgweg 7-9, 53115 Bonn, Germany rossaint@uni-bonn.de.
authors.forename: Sonja
authors.initials: S
authors.lastname: Rossaint
authors.affiliation: University of Bonn, Faculty of Agriculture, Institute of Animal Science, Cold-Chain Management Group, Katzenburgweg 7-9, 53115 Bonn, Germany.
authors.forename: Sonja
authors.initials: S
authors.lastname: Klausmann
authors.affiliation: University of Bonn, Faculty of Agriculture, Institute of Animal Science, Cold-Chain Management Group, Katzenburgweg 7-9, 53115 Bonn, Germany.
authors.forename: Judith
authors.initials: J
authors.lastname: Kreyenschmidt
mesh_terms: D000818:Animals; D001419:Bacteria / Q000302:isolation & purification; D002645:Chickens; D015169:Colony Count, Microbial; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods*; D005519:Food Preservation; D008460:Meat / Q000032:analysis* / Q000382:microbiology*; D009584:Nitrogen / Q000032:analysis*; D010100:Oxygen / Q000032:analysis*; D010369:Pectoralis Muscles / Q000502:physiology
chemical_list: D009584:Nitrogen; D010100:Oxygen
keywords: chicken breast fillets; high-oxygen packaging; modified atmosphere packaging; shelf life; spoilage flora