Method for manufacturing a microbial detection device, microbial detection method, microbial detection kit, and microbial detection device

Patent metadata

Field	Value
Publication number	US-10106832-B2
Application number	US-201615235791-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Sep 1, 2015
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

The present invention provides a method for manufacturing a microbial detection device, microbial detection method, microbial detection kit and microbial detection device. The manufacturing method includes the following steps: defining a sampling portion and a reaction portion on a substrate. Fiber materials are disposed in the reaction portion and a surface of the reaction portion which contacts with the fiber materials comprises abundant hydroxyl groups. Reaction reagents are then added into the fiber materials. An acidic solution is applied to treat the fiber materials and the hydroxyl groups in the reaction portion.

First claim

What is claimed is:

1. A microbial detection method, comprising steps of:
providing a detection device, wherein the detection device comprises a first substrate, wherein the first substrate comprises a sampling zone and a reacting zone, wherein the reacting zone includes a fiber material and a reacting reagent, wherein the fiber material comprises hydroxyl groups on its surface, and wherein the reacting zone is treated with an acidic solution;
providing a test sample to contact with the reacting zone and react with the reacting reagent, wherein the test sample contacts with the sampling zone, and the test sample is moved from the sampling zone toward the reacting zone to react with the reacting reagent;
removing the fiber material; and
adding an alkaline solution to the reacting zone, wherein the fiber material consists of α-cellulose particles.

2. The microbial detection method as claimed in claim 1 , wherein the alkaline solution is transported to the reacting zone in a transporting direction by a second substrate, and the transporting direction is perpendicular to a moving direction of which the test sample moves from the sampling zone to the reacting zone.

3. The microbial detection method as claimed in claim 2 , wherein the hydrophilicity of the first substrate is higher than that of the second substrate.

4. The microbial detection method as claimed in claim 1 , wherein the first substrate further includes a transporting zone, wherein the transporting zone connects with the sampling zone and the reacting zone, and the reacting zone is disposed on a section of the transporting zone.

5. The microbial detection method as claimed in claim 4 , wherein the reacting zone further comprises a first reacting zone and a second reacting zone, which are disposed on different sections of the transporting zone.

6. The microbial detection method as claimed in claim 1 , wherein the reacting reagent comprises at least one selected from a group consisting of 5-methylphenazinium methosulfate and diaphorase; and at least one selected from a group consisting of 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), (2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazoliumchloride (INT), water-soluble tetrazolium salts (WSTs), and (2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT).

Assignees

• Univ Nat Tsing Hua

Inventors

• Kuan Chen-Meng
• Langer Robert S
• Cheng Chao-Min

Classifications

• G01N2333/31

  from Staphylococcus (G) · CPC title

• C12Q1/04

  Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor {(C12Q1/6897 takes precedence)} · CPC title

• C12Q1/32

  involving dehydrogenase · CPC title

• C12Q1/14

  Streptococcus; Staphylococcus · CPC title

• C12Q1/10 Primary

  Enterobacteria · CPC title