Citric Acid (Citric Acid) is one type of industrial chemical commonly used to give sour taste or regulate the safety of a food or drink. The non-toxic nature of citric acid can bind heavy metals (iron or non-iron) and can cause an interesting taste. In biochemistry, citric acid is known as a cyclical intermediate compound that occurs in mitochondria which is important in the metabolism of living things. Citric acid can be produced chemically or by fermentation using microorganisms