Oligoxyloglucan β-glycosidase is an enzyme with systematic name oligoxyloglucan xyloglucohydrolase. This enzyme catalyses the following chemical reactionHydrolysis of (1->4)-β-D-glucosidic links in oligoxyloglucans so as to remove successive isoprimeverose [i..e.. α-xylo-(1->6)-β-D-glucosyl-] residues from the non-reducing chain ends