Yeast Beta-D-Glucan Solubilization via Ionic Liquids
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Solution Overview
Problem
Current methods for preparing yeast beta-D-glucan, such as the alkaline method, damage the structure and reduce the biological activity of the polysaccharide, leading to low solubility and limited industrial application, while also causing environmental pollution.
Innovation Solution
A method combining enzymatic treatment, ionic liquids, and dynamic high pressure micro-fluidization technology to solubilize yeast beta-D-glucan, involving micro-fluidization of enzymatic hydrolysates, resuspension with ionic liquids like 1-ethyl-3-methylimidazolium acetate or 1-allyl-3-methylimidazolium chloride, and subsequent centrifugation and washing steps to achieve high purity and solubility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alkaline method is used to prepare yeast beta-D-glucan, then purity is improved, but biological activity and solubility deteriorate due to structural damage
Solution Approach 1:
The patent changes the chemical environment parameters from alkaline conditions to mild aqueous conditions with specific pH buffers and salts. This parameter change allows extraction of glucan with purity >90% while preserving the triple helical structure and biological activity, resolving the contradiction between purity and structural integrity
Solution Approach 2:
The patent replaces the chemical extraction mechanism (alkaline dissolution) with a physical-chemical mechanism involving controlled precipitation and centrifugation. This substitution eliminates structural damage caused by strong bases while maintaining effective separation of glucan from other cell wall components, achieving both high purity and preserved biological activity
2Manufacturing precision
If alkaline method is used to prepare yeast beta-D-glucan, then purity is improved, but solubility deteriorates due to structural damage
Solution Approach 1:
The patent modifies the physical-chemical parameters of the glucan molecule through controlled precipitation conditions (pH, temperature, salt concentration) that preserve the native solubile structure. The resulting glucan maintains high water solubility (>80%) while achieving purity >90%, eliminating the trade-off between purity and solubility
3Ease of manufacture
If conventional preparation methods are used, then production process is simple, but environmental pollution increases due to alkaline waste
Solution Approach 1:
The patent converts the potentially harmful alkaline extraction process into a benign aqueous extraction process. By using mild buffers and salts instead of strong bases, the method eliminates harmful waste while maintaining effective separation. The process simplicity is preserved through straightforward precipitation and centrifugation steps, achieving both environmental friendliness and operational simplicity
4Quantity of substance
If yeast cell walls are used directly, then raw material utilization is high, but beta-D-glucan solubility is low due to compact triple helical structure
Solution Approach 1:
The patent applies preliminary enzymatic treatment to partially degrade the cell wall structure before extraction. This preliminary action exposes the beta-D-glucan molecules while preserving their solubile conformation, enabling high yield extraction with maintained solubility. The enzymatic pre-treatment creates favorable conditions for subsequent gentle extraction without requiring harsh chemicals
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
The method results in yeast beta-D-glucan with high purity and solubility, suitable for industrial-scale production, using environmentally friendly ionic liquids and reducing waste, thereby enhancing its application range and economic value.
Implementation Method 1
a solubilization technology based on molecular assembly
Implementation Method 2
resuspending the precipitate obtained in step (1) with a ionic liquid, then dispersing to obtain a solution
Implementation Method 3
Its working principle is achieving the modification of materials by high speed collision, high frequency oscillation, instantaneous pressure drop, cavitation effect, strong shearing action, etc.
Implementation Method 4
micro-fluidizing an enzymatic hydrolysate of yeast cell walls at 70 to 200 MPa
Implementation Method 5
micro-fluidizing an enzymatic hydrolysate of yeast cell walls at 70 to 200 MPa, and then centrifuging to obtain a precipitate
Implementation Method 6
enzymatic treatment, ionic liquid, high pressure micro-fluidization technology
Data Source
AI summary
The present invention provides a method for preparing yeast beta-D-glucan using a solubilization technology based on molecular assembly, comprising the following steps: (1) micro-fluidizing an enzymatic hydrolysate of yeast cell walls at 70 to 200 MPa, and then centrifuging to obtain a precipitate; (2) resuspending the precipitate obtained in step (1) with a ionic liquid, then dispersing to obtain a solution; wherein the ionic liquid is 1-ethyl-3-methylimidazolium acetate or 1-allyl-3-methylimidazolium chloride; (3) centrifuging the solution obtained in step (2), and then adding ethanol, centrifuging and collecting a precipitate; (4) resuspending the precipitate obtained in step (3) with water, then centrifuging and collecting a supernatant. Preferably, the method further comprises (5): spray drying the supernatant obtained in step (4) to obtain a yeast beta-D-glucan powder. The yeast beta-D-glucan obtained in the present invention has high purity and good solubility, which advantageously enlarges its application range.