Tenderness that occurred after
slaughtering caused by changes in micro-cell
structure, from a closed structure into an
open structure. Speed of these changes were
influenced by the pH of meat1. The closed
structure had relatively thick muscle fibers,
minimum space amount and volume between
the fibers, and high pH. In a high pH, meat
had hard texture, solid, sticky, dark color,
and difficult to suppress the water out. In the
open structure, muscle protein would be
shortened, the bond between the muscle
fibers broke down, and volume of the space