What is "beta-l-arabinosidase"

In enzymology, a beta-L-arabinosidase is an enzyme that catalyzes the chemical reaction

a beta-L-arabinoside + HO $\rightleftharpoons$ L-arabinose + an alcohol

Thus, the two substrates of this enzyme are beta-L-arabinoside and HO, whereas its two products are L-arabinose and alcohol.

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 beta-L-arabinoside arabinohydrolase. This enzyme is also called vicianosidase.