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Phase Separation Behavior Modifiers for Two-Aqueous Phase Separation in Porous Materials

A porous material and phase separation technology, applied in separation methods, analytical materials, liquid separation, etc., can solve problems such as yield limitation, ATPS performance is not very stable, affect the purification efficiency, purity and yield of target analytes, and achieve Effects of increasing productivity and improving stability

Active Publication Date: 2022-05-17
PHASE DIAGNOSTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, it is limited by the maximum sample volume that the system can handle, the minimum and maximum concentrations of ATPS components, and the yield of purified target analytes
Specifically, due to fluctuations in sample volume, concentrations and ratios of ATPS components, etc., the performance of ATPS is not very stable during phase separation, thereby affecting the purification efficiency, purity, and yield of target analytes.

Method used

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  • Phase Separation Behavior Modifiers for Two-Aqueous Phase Separation in Porous Materials
  • Phase Separation Behavior Modifiers for Two-Aqueous Phase Separation in Porous Materials
  • Phase Separation Behavior Modifiers for Two-Aqueous Phase Separation in Porous Materials

Examples

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Effect test

example 1

[0235] Reality Example 1 - Use of dextran to reduce body mass in a device used to detect pathogens (Streptococcus mutans) in patient samples Product ratio fluctuations.

[0236] Preparation of sample pads for LFA: Glass fiber porous paper was cut into 0.5 cm x 4 cm rectangles. The prepared ATPS fraction, 20% (w / w) PVP and 18.5% (w / w) sodium cholate were pipetted onto glass fiber porous paper. The above porous paper with ATPS was then dried in a lyophilizer for 2 hours. 10% (w / w) dextran was then pipetted onto glass fiber porous paper as a modifier of phase separation behavior on the paper segment. PEG solution (in DI H 2 0) was added to each porous material. 50 μl of a Tris-buffer solution (20 mM Tris, pH 7.5) containing 2% bovine serum albumin (BSA) and 0.1% PEG was added immediately after the first solution.

[0237] The above porous paper containing ATPS and phase separation behavior modifier was then dried in a lyophilizer for 2 hours. The ATPS in porous paper was...

example 2

[0245] Example 2 - Use of polysorbate and sucrose to increase partitioning of food allergen (lupine) in detection devices

[0246] Preparation of sample pads for LFA: Glass fiber porous paper was cut into 0.5 cm x 4 cm rectangles. The prepared ATPS fraction, 20% (w / w) PVP and 18.5% (w / w) sodium cholate were pipetted onto glass fiber porous paper. 5% (w / w) polysorbate and 5% (w / w) sucrose were pipetted onto porous glass fiber paper as phase separation behavior modifiers. PEG solution (in DI H20) was added to each porous material. 50 μl of Tris-buffered solution (20 mM Tris, pH 7.5) containing 2% bovine serum albumin (BSA) and 0.1% PEG was added immediately after the first solution.

[0247] The above porous paper containing the dehydrated ATPS component and phase separation behavior modifier was then dried in a lyophilizer for 1 hour. The ATPS dehydrated porous paper was then placed in a buffer solution containing the indicator (colloidal gold) in PBS (total pH 7.4) to ind...

example 3

[0255] Example 3 - Use of Potassium Phosphate to Increase Total Phase Separation Volume in Sample Solution Purification and DNA Amplification Devices

[0256] The porous hydrogel material was cut into cylindrical shapes with a radius of 2 cm and a height of 6 cm. The porous hydrogel components are integrated into suitable boxes / housings. The device can expose the bottom and top of the hydrogel.

[0257] The ATPS component, 20% (w / w) PVP and 18.5% (w / w) sodium cholate, and 10% (w / w) potassium phosphate as a phase separation behavior modifier were mixed with the blood sample solution, the resulting The blood sample solution contained the relevant DNA fragments in pH 7.4 PBS buffer solution. The purpose of potassium phosphate is to induce macroscopic phase separation at an earlier point (further upstream) during the flow of the solution through the porous material, allowing a larger volume of solution to undergo phase separation and enabling a larger volume to be collected at...

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Abstract

The present invention relates to a method and / or device for improving the separation behavior and performance of an aqueous two-phase system (ATPS) for separating and / or concentrating one or more target analytes from a sample. In one embodiment, the methods and devices of the present invention include an ATPS component in a porous material and one or more phase separation behavior modifiers that improve the separation behavior and performance of the ATPS Features, including but not limited to increasing the stability of ATPS or reducing its fluctuations by adjusting the total volume of the sample solution subjected to phase separation, the volume ratio of the two phases of ATPS, the fluid flow rate and the concentration of ATPS components.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 513,994, filed June 1, 2017, and U.S. Provisional Application No. 62 / 599,001, filed December 14, 2017. The entire content and disclosure of the aforementioned applications are incorporated by reference into this application. [0003] Various publications are cited throughout this application. The entire disclosures of these publications are incorporated by reference in their entirety into this application to more fully describe the state of the art to which this invention pertains. technical field [0004] The present invention relates to a method and / or device for improving the behavior and performance of an aqueous two-phase system (ATPS) in a porous material for the separation and / or concentration of one or more target analytes from a sample solution. The present methods and devices involve the use of one or more phase separation behavior mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/00C07K1/14
CPCB01D15/00C07K1/145C07K1/36C07K1/14G01N1/405B01D11/0492B01D17/02B01D17/0214B01D17/12B01D19/0057B01J20/3208B01J20/3274B01J20/3287B01J20/3289B01D17/0202G01N2001/4061
Inventor 招彦焘布莱恩·相宇·李加勒特·李·莫斯利比阿特丽斯·S·林
Owner PHASE DIAGNOSTICS INC
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