title: Color stability, reducing activity, and cytochrome c oxidase activity of five bovine muscles.
abstract: The objective was to characterize the beef psoas major (PM), longissimus lumborum (LL), superficial semimembranosus (SSM), deep semimembranosus (DSM), and semitendinosus (ST) muscles for differences in instrumental and visual color, metmyoglobin-reducing activity (MRA), total reducing activity (TRA), and cytochrome c oxidase activity. The LL and ST had the most color stability and MRA (p < 0.05), the DSM and PM had the least (p < 0.05), and values for the SSM were intermediate. Visual color (r = -0.66) and a and chroma (r = 0.68) were more correlated with MRA than with TRA (r < 0.14 for all measures). This research supports previous reports that color stability among muscles is variable and that MRA is more useful than TRA for explaining the role of reducing activity in muscle-color stability.
authors.affiliation: Department of Animal Sciences and Industry, Weber Hall, Kansas State University, Manhattan, Kansas 66506, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Seyfert
authors.forename: Richard A
authors.initials: RA
authors.lastname: Mancini
authors.forename: Melvin C
authors.initials: MC
authors.lastname: Hunt
authors.forename: Jiali
authors.initials: J
authors.lastname: Tang
authors.forename: Cameron
authors.initials: C
authors.lastname: Faustman
authors.forename: Marilyn
authors.initials: M
authors.lastname: Garcia
mesh_terms: D000818:Animals; D002417:Cattle; D003116:Color; D003576:Electron Transport Complex IV / Q000032:analysis*; D006801:Humans; D008297:Male; D008460:Meat; D008786:Metmyoglobin / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000201:enzymology / Q000378:metabolism*; D011897:Random Allocation
chemical_list: D008786:Metmyoglobin; D003576:Electron Transport Complex IV