The evolution of rigidity index depending of enzymatic treatment applied to beef
samples and the storage time at 4±1°C (storage time = 0 - 48 h) is shown in Figure 1.
Increasing the action time of exogenous proteolytic enzymes led to a significant
increase in rigidity index values of samples thermal treated by boiling. Thus, after 48
hours of aging have recorded an increase in the rigidity index 2.22 times for the samples
injected with papain, 1.93 times for the samples injected with bromelain, 1.5 times for
the samples marinated with papaya and 1.34 times for the samples marinated with
pineapple while for the control samples the increase was only 1.11 times.