EFFECT OF RADURIZATION ON SHEAR RESISTANCE AND FRAGMENTATION OF CHICKEN MUSCLE |
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| Authors: | R. C. WHITING J. F. RICHARDS |
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| Affiliation: | Dept. of Food Science, University of British Columbia, Vancouver 8, B.C., Canada |
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| Abstract: | SUMMARY —Excised pectoralis muscles of chicken received radurizing doses of γ-radiation at varying times post-mortem to determine the effect on shear resistance, myofibrillar fragmentation (F-ratio) and pH. Irradiation doses between 0.1 and 0.3 Mrad produced decreases in F-ratio and increases in shear resistance. The magnitude of the changes was directly proportional to the duration of postmortem aging prior to irradiation. Muscle pH subsequent to irradiation between 2 and 12 hr post-mortem was not significantly affected by any of the dose-time treatment combinations. Shear resistance and F-ratio changes were strongly correlated on an average basis (r =+ .857; n = 6) but not on an individual sample basis. |
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