3.5. MFI
MFI measurements were taken on the filtered myofibrils (M 4)
that had been adjusted to a standard protein concentration and
measured in spectrophotometer. MFI results for control (49.83) PEF
(50.21) and water bath (49.38) treatments suggest PEF treated
beef samples had slightly greater fragmentation compared to other
samples though subsequent statistical analysis showed that these difference
were not significant (P>0.05). The average figures suggest
that some additional myofibril breakdown had occurred after samples
were treated by PEF which resulted in smaller particle sizes,
which agrees with the findings for particle sizes analysed by laser
diffraction.
3.6. NMR T2 relaxation measurements