Volutin Granules are also known as metachromatic granules and comprise polymerized phosphate.
It serves as an intracytoplasmic storage reserve of phosphates.
Functions:
The primary function of the volutin granules is that it acts as energy storage because it contains energy-rich substances such as complexed inorganic polyphosphate.
And the secondary function is that it is used in light microscopy and it is possible because due to its color reaction with dyes.