Tags: Chemical Compound, Chemical Substance.

Citric acid is a weak organic acid with the formula C6H8O7. It is a natural preservative/conservative and is also used to add an acidic or sour taste to foods and drinks. In biochemistry the conjugate base of citric acid citrate is important as an intermediate in the citric acid cycle which occurs in the metabolism of all aerobic organisms. It consists of 3 carboxyl (R-COOH) groups.Citric acid is a commodity chemical and more than a million tonnes are produced every year by fermentation.

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