Word Origin & History. critical 1580s, censorious, from critic + -al (1). Meaning pertaining to criticism is from 1741; medical sense is from c.1600; meaning of the nature of a crisis is from 1640s; that of crucial is from 1841.
Calcium citrate is the calcium salt of citric acid. It is commonly used as a food additive (E333), usually as a preservative, but sometimes for flavor.In this sense, it is similar to sodium citrate.alcium citrate is also found in some dietary calcium supplements (e.g. Citracal).
Calcium is found naturally in dairy products such as milk, yogurt and cheese. Calcium citrate is often referred to as a sour salt, as it has both sour and salty tastes. It is manufactured in a fermenting process: calcium hydroxide is used to neutralize citric acid. The resulting product -- calcium citrate - is then filtered and cleaned.