Liha töötlemine
ase complex with an apparent sedimentation dence that MCP breaks down the same pro-
coefficient of 20S. Two types of regulatory teins in postmortem muscle as in in vitro tests
complexes bind to both ends of the cylindri- (Huang et al. 2007). Proteasomes remained
cal 20S. One complex, the 26S proteasome, relatively stable throughout 7 days of aging
is a eukaryotic ATP-dependent protease in beef and rabbit muscle (Yamamoto et al.
(Tanaka 1998) and hydrolyzes ubiquitin- 2009), supporting their potential role in meat
conjugated proteins (Tanaka 1998; Delbarre- tenderization.
Aging/Tenderization Mechanisms 91
Current Enzymatic Model of substantially diminishes early postmortem,
Postmortem Proteolysis and and (2) the fact that many of the conclusions
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