eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-02-10 5 1 221 228 6611 article Kannan Natarajan 1 Aravindan Rajendran 1 Viruthagiri Thangavelu 1 Biochemical Engineering Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai nagar - 608 002 (India) Tannase (tannin acyl hydrolase, E.C.3.1.1.20) is an extracellular hydrolase enzyme that catalyzes the hydrolysis of ester and depside bonds in hydrolysable tannins or gallic acid esters, liberating glucose and gallic acid (GA). Tannase cleaves the ester linkages between galloyl groups present in various compounds such as epigallocatechin and epigallocatechin gallate that are present in green tea leaves. The enzyme could be obtained from many sources starting from prokaryotes to higher eukaryotes. Vital minutiae such as regulation pathways, catalytic characteristics and other properties remain unrevealed which limits its usage in large scale. This study essentially elicits the information on tannase substrates, mechanism, applications, and the recent trends in the purification of tannase. https://www.biotech-asia.org/vol5no1/tannase-enzyme-the-most-promising-biocatalyst-for-food-processing-industries/ Tannase; gallic acid; Biocatalyst; Food processing industries