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RELATION OF ATPase ACTIVITY AND CALCIUM UPTAKE TO POSTMORTEM GLYCOLYSIS
Author(s) -
KRZYWICKI K.
Publication year - 1971
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.1365-2621.1971.tb03307.x
Subject(s) - glycolysis , calcium , atpase , chemistry , enzyme , enzyme assay , medicine , calcium atpase , endocrinology , biochemistry , biology , organic chemistry
SUMMARY –Calcium uptake and Ca 2+ ‐activated ATPase activity have been investigated in relation to pH, in pork muscle Longissimus dorsi, sampled 35 min postmortem. Both the rate of calcium uptake and the enzyme activity were negatively, and significantly, correlated with pH 1 , except when the latter value dropped below 5.9. At pH 1 < 5.9, impairment of reticular function and of enzyme activity became apparent. As pH 1 is a guide to the rate of postmortem glycolysis, the significance of the findings is discussed with respect to accelerated glycolysis and the development of the PSE condition in pork.