vicianin hydrolase , which catalyzes the hydrolysis of vicianin ( k ( m ) , 4.9 millimolar ) to ( r ) -mandelonitrile and vicianose at an optimum ph of 5.5 , was extensively purified from the young fronds and fiddleheads of the squirrel 's foot fern ( davallia trichomanoides blume ) using deae-cellulose and ultrogel ha chromatography .
C0020289
hydrolase
C0020291
hydrolysis