Surfactant Emulsion Breaking for Bead Support Recovery
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Solution Overview
Problem
The automation of emulsion formation and recovery of bead supports from emulsions in genetic testing is challenging, leading to significant losses and reduced yield, which affects genetic testing methods.
Innovation Solution
A method involving an aqueous surfactant solution with a specific concentration of anionic and non-ionic surfactants is used in a centrifuge tube, where a hydrophobic liquid is layered over the surfactant solution, allowing the emulsion to break and the bead supports to partition into the surfactant solution under centrifugal force, thereby enhancing recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional emulsion breaking methods are used, then emulsion separation is achieved, but significant bead support loss occurs reducing yield
Solution Approach 1:
The patent changes the chemical parameters of the breaking solution by using a dual-surfactant system (anionic and non-ionic surfactants) with specific concentration ratios. This chemical parameter change enables effective emulsion breaking while maintaining bead support integrity, resolving the contradiction between achieving separation and preventing substance loss.
Solution Approach 2:
The patent employs a composite surfactant system combining anionic and non-ionic surfactants. This composite approach creates a synergistic effect where the combination of different surfactant types achieves superior emulsion breaking performance while minimizing bead support loss compared to single surfactant systems.
2Productivity
If automation of emulsion formation and recovery is implemented, then process efficiency is improved, but significant bead support loss occurs
Solution Approach 1:
The patent optimizes the chemical parameters of the breaking solution to work effectively with automated processing. The specific surfactant concentration ranges and ratios enable automated systems to achieve both high efficiency and high recovery rates, resolving the contradiction between automation benefits and substance loss.
3Productivity
If high concentration of anionic surfactant is used, then emulsion breaking effectiveness is improved, but bead support loss increases
Solution Approach 1:
The patent precisely controls the concentration parameter of anionic surfactant within 5.0%-15.0% and maintains a specific ratio with non-ionic surfactant (0.05%-8.0%). This parameter optimization ensures effective emulsion breaking while preventing excessive bead support loss that would occur with higher anionic surfactant concentrations alone.
Solution Approach 2:
The patent uses a composite surfactant system where non-ionic surfactant acts as a protective component that mitigates the potentially harmful effects of high anionic surfactant concentration. This composite approach allows the system to achieve effective emulsion breaking while the non-ionic surfactant protects the bead supports from excessive loss.
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 method effectively recovers a high percentage of bead supports, with at least 70% recovery, improving the yield and facilitating genetic testing by efficiently breaking emulsions and separating bead supports.
Implementation Method 1
supplying an aqueous surfactant solution into a centrifuge tube, the surfactant solution includes an anionic surfactant in a range of 5.0% to 15.0% and includes a non-ionic surfactant in a range of 0.05% to 8.0%
Implementation Method 2
applying an emulsion into the centrifuge tube while centrifuging, the emulsion comprising a dispersed aqueous phase including the bead support and a continuous phase comprising a hydrophobic liquid, the emulsion breaking and material of the dispersed phase preferentially partitioning to the surfactant solution
Data Source
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AI summary
A method ofrecovering a bead support from an emulsion in-cludes supplying an aqueous surfactant solution into a centrifuge tube; sup -plying a hydrophobic liquid over the surfactant solution in the centrifuge tube, wherein a ratio of the volume of the aqueous surfactant solution to the volume of the hydrophobic liquid is not greater than 0.5; and applying an emulsion over the hydrophobic liquid while centrifuging, the emulsion com-prising a dispersed aqueous phase including the bead support, the emulsion breaking and material of the dispersed phase preferentially partitioning to the surfactant solution.