title: Effects of vacuum and modified atmosphere on textural parameters and structural proteins of cultured meagre (Argyrosomus regius) fillets.
abstract: The influence of two preservation strategies (vacuum package and modified atmosphere package) on the post-mortem changes of textural parameters, pH, water holding capacity, sarcoplasmic and myofibrillar proteins, and collagen content of meagre (Argyrosomus regius) fillets was studied. Fillets were stored in a cold room in aerobic (control, C), vacuum (V) and modified atmosphere (MA) package. Samples were withdrawn at six sampling points throughout 15-day storage, and post-mortem changes were assessed. The textural parameters were significantly enhanced in V and MA compared to C. Both V and MA treatments reduced the intensity of a group of myofibrillar protein fractions (140-195 kDa) and increased insoluble collagen compared to C. Consequently, the post-mortem flesh softening in C was attributed to increased proteolysis in both intracellular and extracellular structural proteins. The preservation of the textural and biochemical characteristics of meagre fillets subjected to V and MA treatments makes these two treatments highly recommendable for the commercialization of meagre fillets.
authors.affiliation: Departamento de Biología y Geología, Universidad de Almería, Spain.
authors.forename: María I
authors.initials: MI
authors.lastname: Sáez
authors.affiliation: Departamento de Biología y Geología, Universidad de Almería, Spain.
authors.forename: Tomás F
authors.initials: TF
authors.lastname: Martínez
authors.affiliation: Departamento de Producción, Centro IFAPA El Toruño, Spain.
authors.forename: Salvador
authors.initials: S
authors.lastname: Cárdenas
authors.affiliation: Departamento de Biología y Geología, Universidad de Almería, Spain dsuarez@ual.es.
authors.forename: María D
authors.initials: MD
authors.lastname: Suárez
mesh_terms: D000818:Animals; D001274:Atmospheric Pressure; D003094:Collagen / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D029941:Fish Proteins / Q000032:analysis*; D005398:Fisheries / Q000379:methods*; D018857:Food Packaging / Q000379:methods*; D005519:Food Preservation / Q000379:methods*; D061353:Food Storage / Q000379:methods; D006863:Hydrogen-Ion Concentration; D010473:Perciformes; D014110:Touch; D014618:Vacuum
chemical_list: D029941:Fish Proteins; D003094:Collagen
keywords: Meagre fillets; SDS-PAGE; modified atmosphere; texture profile analysis; vacuum package