Method for assaying urease
First Claim
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1. A method for assaying urease on a targeted solid body surface comprising:
- (a) contacting an end opening of a thin tube with a targeted solid body surface to form a space between said targeted solid body surface and an inner wall surface of said thin tube;
(b) supplying a urea solution into said space to bring said urea solution into contact with said targeted solid body surface;
(c) determining a pH change of said urea solution in said space with a pH electrode, said pH electrode comprising a sensing portion whose tip is arranged in said space to be not more than 5 mm away from said end opening of said thin tube; and
(d) correlating the pH change determined in step (c) with the presence of urease where an increase in pH indicates the presence of urease.
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Abstract
A method for assaying an enzyme on a targeted solid body surface, including the steps of contacting an end opening of a thin tube with a targeted solid body surface to form a space between the targeted solid body surface and inner wall surface of the thin tube, supplying a substrate solution into the space to bring the substrate solution in contact with the targeted solid body surface, and determining a pH change of the substrate solution in the space by using a pH electrode; and an apparatus therefor.
67 Citations
7 Claims
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1. A method for assaying urease on a targeted solid body surface comprising:
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(a) contacting an end opening of a thin tube with a targeted solid body surface to form a space between said targeted solid body surface and an inner wall surface of said thin tube; (b) supplying a urea solution into said space to bring said urea solution into contact with said targeted solid body surface; (c) determining a pH change of said urea solution in said space with a pH electrode, said pH electrode comprising a sensing portion whose tip is arranged in said space to be not more than 5 mm away from said end opening of said thin tube; and (d) correlating the pH change determined in step (c) with the presence of urease where an increase in pH indicates the presence of urease. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification