In enzymology, a quercitrinase () is an enzyme that catalyzes the chemical reaction quercitrin + H2O L-rhamnose + quercetin Thus, the two substrates of this enzyme are quercitrin and H2O, whereas its two products are L-rhamnose and quercetin. This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is quercitrin 3-L-rhamnohydrolase. The enzyme can be found in Aspergillus flavus. It is an enzyme in the rutin catabolic pathway. References Further reading EC 3.2.1 Enzymes of unknown structure Quercetin glycosides