title: Quality assessment of commercially processed carbon monoxide-treated tilapia fillets.
abstract: Carbon monoxide (CO) has been used to stabilize the color of fish muscle during frozen storage and distribution. This study compared changes in the quality profiles of CO-treated and untreated (UT) tilapia fillets stored at 21 to 22 °C (room temperature), 4 to 5 °C (refrigerated), and 0 °C (iced). Samples (n = 3) were analyzed at different time intervals for chemical, lipid oxidation, microbiological, color, and expert sensory profiles. CO samples contained greater (P < 0.05) apparent ammonia and total volatile base nitrogen (TVB-N) at day 0, with greater (P < 0.05) TVB-N throughout refrigerated and iced storage. At time 0, peroxide values (POV) and thiobarbituric-acid-reactive substances were lower (P < 0.05) for CO samples and continued to have lower trends throughout all storage temperatures. Microbiological analysis at time 0 did not show any differences between UT and CO samples. Redness (a*) color values were greater (P < 0.05) in CO tilapia at time 0; however, treated product showed a more rapid decline in a* throughout all storage temperatures. While expert sensory evaluation showed no statistical differences between UT and CO tilapia at time 0, CO product failed sensory assessment sooner than UT product when stored refrigerated and in ice.
authors.affiliation: Dept. of Nutrition and Food Sciences, Univ. of Rhode Island, West Kingston, RI, USA. Pivarnik@uri.edu
authors.forename: Lori F
authors.initials: LF
authors.lastname: Pivarnik
authors.forename: Cameron
authors.initials: C
authors.lastname: Faustman
authors.forename: Surendranath P
authors.initials: SP
authors.lastname: Suman
authors.forename: Catherine
authors.initials: C
authors.lastname: Palmer
authors.forename: Nicole L
authors.initials: NL
authors.lastname: Richard
authors.forename: P Christopher
authors.initials: PC
authors.lastname: Ellis
authors.forename: Michael
authors.initials: M
authors.lastname: Diliberti
mesh_terms: D000641:Ammonia / Q000032:analysis; D000818:Animals; D002248:Carbon Monoxide / Q000737:chemistry*; D015169:Colony Count, Microbial; D003116:Color; D003257:Consumer Product Safety; D005506:Food Contamination / Q000032:analysis; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods*; D005519:Food Preservation / Q000592:standards; D063427:Food Quality; D061353:Food Storage / Q000379:methods*; D005615:Freezing; D006801:Humans; D050356:Lipid Metabolism / Q000187:drug effects; D017747:Seafood / Q000032:analysis* / Q000382:microbiology; D013696:Temperature; D017210:Tilapia / Q000382:microbiology
chemical_list: D000641:Ammonia; D002248:Carbon Monoxide