منابع مشابه
Immobilization of Glucoamylase on Macroporous Spheres
Glucoamylase was covalently immobilized through the spacer-arm of the poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) spheres by using a glutaraldehyde as a coupling agent. The influence of the enzyme load, applied to the support on immobilization, yield and specific activity, has been determined. Obtained specific activity was 700 U/g with immobilization yield of 35 %. The Km val...
متن کاملPreparation of Cross-Linked Glucoamylase Aggregates Immobilization by Using Dextrin and Xanthan Gum as Protecting Agents
In this paper glucoamylase from Aspergillus niger was immobilized by using a modified version of cross-linked enzyme aggregates (CLEA). The co-aggregates were cross-linked with glutaraldehyde; meanwhile dextrin and xanthan gum as protecting agents were added, which provides high affinity with the enzyme molecules. The immobilized glucoamylase was stable over a broad range of pH (3.0–8.0) and te...
متن کاملSignificance of hornblende in calc-alkaline andesites and basalts
Hornblende occurs in some andesitic and basaltic rocks of calc-alkaline affini1y, where it is commonly associated with olivine. The texture, eruption history, and composition are interpreted to indicate that hornblende commonly forms as a product of reaction between olivine and basaltic and andesitic liquids. The natural hornblendes probably formed within the crust at temperatures between 960o ...
متن کاملEnzyme Immobilization: An Overview on Nanoparticles as Immobilization Matrix
Immobilization process is to optimize the operational performance of an enzyme for industrial applications. So far different matrices have been described in the literature to improve the performance of the immobilized enzymes. With the advent of nanotechnology, the nanomaterials because of their unique physico-chemical properties constitute novel and interesting matrices for enzyme immobilizati...
متن کاملGlucoamylase immobilized on acid-hydrolyzed starch graft polyacrylonitrile.
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. Fact...
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ژورنال
عنوان ژورنال: Biotechnology and Bioengineering
سال: 1976
ISSN: 0006-3592,1097-0290
DOI: 10.1002/bit.260180311