The tannase is produced by submerged fermentation of a selected fungal strain followed by purification, formulation and drying. The enzyme finds wide applications in various industries including food and beverage, feed, cosmetics and leather, where the enzyme plays its role by modifying tannins in desirable ways.

Tannin acyl hydrolase, commonly called tannase, catalyzes the hydrolysis of ester and depside bonds in such hydrolysable tannins as tannic acid, thereby releasing glucose and gallic acid in the end. By the catalysis with tannase, gallic acid glucose ester with tannic acid is successively hydrolyzed into 1,2,3,4,6-gallic acid tannin, 2,3,4,6-tetrapalic acid tannin and two monomers gallic acid-glucose, and finally gallic acid and glucose are produced.