Journal of The Showa Medical Association
Online ISSN : 2185-0976
Print ISSN : 0037-4342
ISSN-L : 0037-4342
A NEW METHOD FOR THE DETERMINATION OF α-AMYLASE ACTIVITY WITH MALTOPENTAOSE AS A SUBSTRATE
Ryuichi UZAWAYasushi TAKAGIKunihide GOMIToru ISHII
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1981 Volume 41 Issue 3 Pages 265-269

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Abstract
In this study, we developed a new method for the determination of α-amylase activity with maltopentaose as a substrate. Alpha-amylase activity is calculated numerically from the rate of glucose formation coupled with α-glucosidase.
This method proved to be capable of rapid and precise results, and its results correlated satisfactorily with the starch-dye method for serum samples (r=0.941) .
Apparent Km value of maltopentaose for salivary and pancreatic type amylase are 5.26 × 10-3 mol/l, and 2.89 × 10-3 mol/l, respectively.
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© The Showa Medical Association
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