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Effect of Prerigor Pressurization on Postmortem Bovine Muscle Lactate Dehydrogenase Activity and Glycogen Degradation
Author(s) -
ELKHALIFA E. A.,
ANGLEMIER A. F.,
KENNICK W. H.,
ELGASIM E. A.
Publication year - 1984
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1984.tb12476.x
Subject(s) - lactate dehydrogenase , cabin pressurization , glycogen , degradation (telecommunications) , chemistry , l lactate dehydrogenase , biochemistry , dehydrogenase , enzyme , computer science , materials science , telecommunications , composite material
Prerigor bovine semimembranosus muscle was pressure‐treated at 103.5 MNm ‐2 (15.000 psi) for 2 min at 37°C. Glycogen levels of pressurized muscle were significantly (P < 0.01) lower than those of the control at 1, 2 and 4 hr postmortem. Glucose concentrations were significantly (P < 0.01) higher in the treated muscle than in the control at all sampling periods. Lactate content increased rapidly after pressurization (1 hr postmortem); however, there was no significant difference between control and treated muscles at 24 hr. Pressurized muscle showed a significant (P < 0.01) increase in LDH activity over that of the control muscle at 1 hr, but not at 24 hr postmortem. Thus pressurization of muscle accelerated the rate of glycolysis and enhanced LDH activity.