Magnesium and Calcium Contents of Fish and Squid Tissues

Abstract

(1) The content of magnesium and calcium in the various tissues of fish and squid were determined by the atomic absorption spectrophotometry. The results showed that the contents were 4-36mg % in calcium and 10-41mg % in magnesium. The highest content of magnesium was found in the dorsal muscle in all the species of fish examined.
(2) On the liberation of magnesium and calcium from the muscle proteins, the chelating agency was postulated to become weaker immediately after the storage, as judged by the increment of the amount liberated.
(3) Centrifugal fractionation of the carp muscle homogenate revealed that the cellular magnesium was present in all the particles fractionated.