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Separation and direct detection of raw and gelatinized starch hydrolyzing activities of glucoamylase on isoelectric focusing gels.

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Title Separation and direct detection of raw and gelatinized starch hydrolyzing activities of glucoamylase on isoelectric focusing gels.
 
Creator Suresh Babu, C. V.
Dubey, A. K.
Kini, R.
Umesh Kumar, S.
Karanth, N. G.
 
Subject 16 Enzyme Chemistry
25 Sugar/Starch/Confectionery
 
Description A procedure to detect raw and gelatinized starch activities of glucoamylase on isoelectric focusing (IEF) gels by using 2, 3, 5-triphenyltetrazolium chloride is described. The reagent reacts with the reducing group of glucose released by glucoamylase from the substrate starch. Using the reaction, production of glucoamylase by Aspergillus niger was detected on 10% IEF gels within a pH range of 2.5-9.5. Since the method can detect raw and gelatinized starch activities of glucomylase associated with 1 microg protein, it will be useful for enzyme engineering studies that involve screening of various mutations.
 
Date 1999
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://ir.cftri.com/2198/1/Electrophoresis%201999%2C%2020%2C%20483-485.pdf
Suresh Babu, C. V. and Dubey, A. K. and Kini, R. and Umesh Kumar, S. and Karanth, N. G. (1999) Separation and direct detection of raw and gelatinized starch hydrolyzing activities of glucoamylase on isoelectric focusing gels. Electrophoresis, 20 (3). pp. 483-485. ISSN 0173-0835