Thin-Layer Chromatography Groove Extraction for High-Yield Spot Recovery

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Solution Overview

Problem

Current methods for extracting components from thin layer chromatography are inefficient and often result in decomposition or mixing of non-target compounds, making it difficult to achieve high yields and suitable for further analysis.

Innovation Solution

A preparative thin layer chromatography method involving the formation of a groove around the target spot, insertion of a nozzle with a packing part to prevent solvent diffusion, and controlled solvent discharge and suction to isolate and collect the target component without heating, thereby preventing decomposition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional extraction methods are used (shaving carrier, mixing with solvent, filtration), then extraction can be performed, but the extraction yield is low and the process is inefficient

Engineering Contradiction:

Improveextraction efficiencyVSAvoidtarget component yield

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The carrier is segmented by forming a groove around the target spot, isolating it from the rest of the carrier. This segmentation allows selective extraction of the target component without interference from other carrier materials, improving both extraction efficiency and yield.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The target spot is extracted by inserting a nozzle into the groove and discharging solvent directly onto the isolated spot. This taking out approach removes the target component selectively from the carrier, achieving high extraction yield and efficiency.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of operation

If solvent is discharged onto the spot without groove formation, then extraction is simpler, but solvent diffuses into the carrier making selective acquisition difficult

Engineering Contradiction:

Improveextraction simplicityVSAvoidselective component acquisition

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The groove segments the carrier around the target spot, creating a physical barrier that prevents solvent diffusion into surrounding carrier regions. This maintains extraction simplicity while achieving precise selective acquisition of the target component.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The groove creates a localized extraction zone around the target spot. By confining solvent discharge to this local area, the method achieves both operational simplicity and high selectivity for the target component.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If hot air blowing method is used for detachment, then ionization for mass analysis is achieved, but highly volatile compounds are limited and decomposition may occur

Engineering Contradiction:

Improveapplication rangeVSAvoidcompound decomposition

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The mechanical solvent discharge and suction method replaces the thermal hot air blowing method. This substitution eliminates thermal decomposition risks while expanding applicability to non-volatile and thermally sensitive compounds, improving both versatility and preventing harmful effects.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Loss of substance

If preparative chromatography is performed separately, then high extraction yield is achieved, but additional effort and time are required beyond thin layer chromatography

Engineering Contradiction:

Improvetarget component yieldVSAvoidextraction time

Core Design Contradiction:

Loss of substanceVSLoss of time

Solution Approach 1:

The groove formation and solvent discharge/suction steps are merged into the thin layer chromatography process itself. This combination achieves preparative-scale extraction yield directly from the analytical TLC plate, eliminating separate preparative chromatography steps and reducing overall time investment.

Inventive Principle:

Principle #5Merging (Combining)

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 allows for efficient and convenient extraction of target components in high yield, suitable for various chemical analyses without decomposition, reducing effort and improving research efficiency.

Implementation Method 1

a process 1 that forms a groove by removing a carrier at a circumferential edge of the spot to be extracted

Methodology Applied

Scientific EffectAbrasion: Abrasion

Implementation Method 2

a process 3 that discharges a solvent through the nozzle

Methodology Applied

Scientific EffectSolvation: Solvation

Implementation Method 3

a process 4 that sucks the solvent in which a spot component has been dissolved

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentUS11204345B2Preparative method and apparatus for a thin-layer chromatograph

Publication Date: 2021.12.21 YAMAZEN

AI summary

To provide a preparative thin layer chromatography method capable of acquiring a target spot efficiently using a simple and convenient method without the possibility of decomposition of a component in a spot. The preparative thin layer chromatography method is a preparative method for dispensing a spot from a thin layer chromatography plate and includes a process 1 that forms a groove by removing the carrier at the circumferential edge of a spot to be dispensed, a process 2 that inserts a nozzle having a packing part at the tip thereof into the groove formed in the process 1, a process 3 that discharges a solvent through the nozzle, and a process 4 that sucks the solvent in which a spot component has been dissolved.