Delta-Cyclodextrin Production Without Chromatographic Purification
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Solution Overview
Problem
Existing methods for producing cyclodextrins larger than alpha, beta, and gamma-cyclodextrins are inefficient, requiring column chromatography and yielding low purity, making large-ring CDs commercially unviable for drug formulations and other applications.
Innovation Solution
A method involving the use of a glucose-based compound, cyclodextrin glucanotransferase, and an ion of formula (B12ClnH12-n)2− in a solvent mixture to produce delta-cyclodextrin or derivatives, followed by incubation, partial solvent evaporation, and precipitation to isolate the product without chromatography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional enzymatic breakdown methods are used to produce large-ring cyclodextrins, then production is possible, but the yield is low and column chromatography is required for purification
Solution Approach 1:
The invention changes the chemical parameters of the reaction system by introducing boronate ions (B12ClnH12-n)2- as template agents. These ions specifically coordinate with the hydroxyl groups of cyclodextrin molecules during synthesis, directing the formation of large-ring structures (delta-cyclodextrin with 9 glucose units) and enabling high-yield production without requiring complex chromatographic purification
Solution Approach 2:
The boronate ion acts as an intermediary template that mediates the enzymatic cyclization reaction. The ion temporarily associates with the substrate and enzyme complex during the reaction, guiding the formation of the desired 9-unit ring structure, and can be recovered and reused after product formation
2Manufacturing precision
If column chromatography is used for purification, then product purity is achieved, but production cost increases and commercial viability decreases
Solution Approach 1:
By changing the reaction conditions to include boronate template ions, the invention achieves high product purity through selective templated synthesis rather than post-reaction purification. The template ion directs the enzyme to form only the desired delta-cyclodextrin product with high selectivity, eliminating the need for expensive chromatographic separation
Solution Approach 2:
The invention extracts or removes the need for column chromatography from the production process entirely. By using the boronate template approach, the reaction directly produces high-purity delta-cyclodextrin that can be isolated by simple filtration and solvent removal, making the process commercially viable
3Productivity
If existing production methods are used, then conventional cyclodextrins (alpha, beta, gamma) can be produced, but large-ring cyclodextrins cannot be produced in high yield and purity
Solution Approach 1:
The boronate ion serves as a specific intermediary template that enables the reliable production of large-ring cyclodextrins. The ion's unique ability to coordinate with nine glucose units simultaneously provides a structural template that guides the enzyme to form delta-cyclodextrin with consistent high yield and purity, a result unachievable with conventional methods
Solution Approach 2:
The invention changes the chemical environment by introducing boronate template ions, which alter the enzyme's substrate recognition and catalytic behavior. This parameter change enables the reliable formation of large-ring structures that are otherwise difficult to produce consistently
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
Enables high-yield production of delta-cyclodextrin and derivatives with high purity, facilitating their isolation and potential use in drug formulations, cosmetics, and nutrition without the need for column chromatography.
Implementation Method 1
an enzyme such as cyclodextrin glucanotransferase
Implementation Method 2
an ion of formula (B12ClnH12-n)2−, wherein n is 1 to 12
Implementation Method 3
a solvent to form a mixture
Implementation Method 4
partial solvent evaporation
Implementation Method 5
precipitation to isolate the product
Data Source
AI summary
The disclosure relates to a synthetic method of producing delta-cyclodextrin. The method is scalable, and the isolation of the product does not require chromatography.