Kannan, K(Madras) and Ravindranath, M H (1981) Calcium. CMFRI Special Publication (7). pp. 77-87.



Calcium in tissues of crustaceans exists in two states namely diffusible and non-diffusible. Diffusible calcium is also referred to as dialysable and ultra filterable calcium, which includes free calcium ions and calcium complexed with carbonate, citrate, phosphate and free acidic amino acids. Non-diffusible calcium is referred to as non-dialysable calcium and non-ultra filterable calcium. It is also commonly called as bound-calcium. In this state, calcium may be bound to proteins, lipids and acidic mucosubstances. Bound calcium is precipitable with 80% ethanol. The supernatant will contain dialysable fraction. Complete precipitation of bound calcium is achieved by diluting the tissues twenty times with ethanol (Kannan & Ravindranath, 1980).

Item Type:Article
Uncontrolled Keywords:Calcium; Crustacean Biochemistry and Physiology
Subjects:Crustacean Fisheries
Fish and Fisheries > Biochemical Study
CMFRI-Cochin > Marine Capture > Crustacean Fisheries
ID Code:3156
Deposited By:Geetha P Mrs
Deposited On:24 Sep 2010 11:38
Last Modified:28 Nov 2013 11:02

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