Catalyzes the hydrolysis of a non-reducing terminal alpha-L-arabinofuranosidic linkage in ginsenoside Rc (alpha-L-arabinofuranosyl-(1->6)-alpha-D-glucopyranosyl) to release alpha-D-glucopyranosyl (Rd). It is not able to hydrolyze alpha-L-arabinopyranosyl-(1->6)-alpha-D-glucopyranosyl (Rb2). Completely inhibited by Cu(2+) and partially inhibited by Co(2+) and Ba(2+). Optimum pH is 4.7. Optimum temperature is 57 degrees Celsius. Homohexamer; trimer of dimers. Belongs to the glycosyl hydrolase 51 family.