title: Glucoamylase immobilized on acid-hydrolyzed starch graft polyacrylonitrile.
abstract: A continuous stirred reactor fed maltose as substrate was used to show that acid hydrolyzed starch-g-polyacry-lonitrile and other polysaccharide graft copolymers can bind and retain significant quantities of active glucoamy-lase. Glucose productivities up to 2.7 g/g carrier/h were observed with the immobilized glucoamylase, and half-lives up to 1800 h were indicative of activity longevity. Factors influencing the immobilized enzyme activity and first-order decay rate included temperature, p(H), and carrier composition. In all cases, maltose was converted quantitatively to glucose with no evidence of reversion product formation.
authors.affiliation: Northern Regional Research Center, Agricultural Research Service, U. S. Department of Agriculture,The mention of firm names or trade products does not imply that they arc endorsed or recommended by the U. S Department of Agriculture over other firms or similar products not mentioned. Peoria, Illinois 61604.
authors.forename: P J
authors.initials: PJ
authors.lastname: Slininger
authors.forename: G F
authors.initials: GF
authors.lastname: Fanta
authors.forename: T P
authors.initials: TP
authors.lastname: Abbott