Organic Phase Barrier for Magnetic Biomolecule Separation
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Solution Overview
Problem
Existing methods for separating biomolecules using magnetic rods often result in irregular carryover of the aqueous phase, leading to inaccuracies and fluctuations in biomolecule concentration, especially in sensitive applications like virus detection, due to physical phenomena and unwanted component transfer.
Innovation Solution
The method involves completely covering the aqueous phase with an organic oil phase, allowing the magnetic bar to pass through the organic phase only, thereby preventing contact with the aqueous phase and reducing unwanted component transfer during the separation of magnetic particles and biomolecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the magnetic rod is passed through the aqueous phase to separate magnetic particles, then the particles can be effectively collected, but irregular amounts of aqueous phase are carried away, leading to inaccuracy in biomolecule concentration
Solution Approach 1:
An organic phase is introduced as an intermediary layer between the magnetic rod and the aqueous phase. The magnetic rod passes through this organic phase to contact and collect magnetic particles from the aqueous phase below, without directly penetrating the aqueous phase. This intermediary organic layer acts as a barrier that prevents irregular carryover of aqueous phase while still allowing effective particle collection.
2Productivity
If the magnetic rod contacts the aqueous phase during separation, then particle collection is efficient, but unwanted components and impurities are transferred along with the particles
Solution Approach 1:
The organic phase serves as a protective intermediary that the magnetic rod passes through to reach the aqueous phase. This intermediary layer filters out unwanted components and impurities, allowing only the magnetic particles to be transferred from the aqueous phase to the organic phase, thereby reducing contamination.
3Loss of substance
If a thin organic phase layer is used, then the magnetic rod can still contact the aqueous phase, but if a thick organic phase layer is used, then the rod must pass through more material, potentially reducing separation efficiency
Solution Approach 1:
The thickness of the organic phase layer is optimized as a critical parameter. By adjusting this parameter, the system achieves a balance where the organic phase is thick enough to prevent direct rod-aqueous phase contact and reduce carryover, but not so thick as to impede magnetic particle transfer efficiency. This parameter optimization resolves the contradiction between carryover reduction and separation efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the transfer of the aqueous phase and impurities, ensuring more uniform and accurate biomolecule isolation, resulting in higher purity eluates and reduced interference in subsequent reactions, thereby enhancing the reproducibility and efficiency of biomolecule separation and analysis.
Implementation Method 1
the aqueous phase is completely overlaid with an organic phase... the magnetic rod is passed only through the organic phase during the separation of the particles from the aqueous phase
Implementation Method 2
particles containing magnetic particles... are separated from an aqueous phase using a magnetic rod
Data Source
Figure 1
AI summary
The present invention relates to a method for purifying biomolecules or for analyzing whether an aqueous phase contains biomolecules by means of magnetic separation. The invention further relates to uses, devices, and kits relating to the method according to the invention.