Liha töötlemine
1999), nebulin (Tatsumi strength) increases nearly twofold and has a
and Takahashi 1992, 2003), and desmin close relationship with pH (r = 0.97) during
(Takahashi 1996) through direct binding the time course of rigor mortis (Ouali 1990),
reactions with free Ca2+. The second key yet it has received comparatively little atten-
element, weakening of rigor linkages, was tion in meat research studies. It was sug-
attributed to the translocation of paratropo- gested that the pH drop was likely the major
myosin from the A-I junction region onto cause for the large increase in osmotic pres-
thin filament actin (Hattori and Takahashi sure through alteration of proteins to which
1988; Takahashi et al. 1995; Fei et al. 1999). ions (mainly Na+, K+, Ca2+, and Mg2+) are
All these ultrastructural changes were dem- normally bound (Ouali et al. 1991). In
onstrated specifically by 0
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