The objective明确the present study was to the proteome characterize basis在intramuscular color stabilityvariations in beef semimembranosus . Semimembranosus muscles from eight carcasses(n = 8)were fabricatedinto 2.54 -厘米thick color - labile inside(ISM)and color - stable outside(OSM)steaks英国广播公司第一台steak在sarcoplasmic .proteome analysis was immediately frozen,whereas和其他steaks were allotted to retail display under aerobicpackaging . Color attributes were evaluated instrumentally and biochemically on 0,2,4天。Sarcoplasmic andproteome was analyzed using two - dimensional electrophoresis and tandem mass spectrometry ISM steaks .demonstrated greater(P b 0.01)abundance明确glycolytic enzymes(fructose - bisphosphate aldolase A,phosphoglyceratemutase2,and beta - enolase)and phosphatidylethanolamine - binding protein 1 than theirOSMcounterparts .Possible rapid post - mortem glycolysis in ISM,insinuated by over - abundance明确glycolytic enzymes,couldlead to rapid pHdecline在early post - mortem,which in turn could potentially compromise其color stability .These results indicated即differential abundance明确sarcoplasmic proteome contributes to intramuscular variationsin beef color stability .
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