Fructoborate Di-Complex Yield via Molar Ratio Control
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Solution Overview
Problem
Current methods for producing calcium fructoborate (CF) suffer from low yields and high residual boric acid content, which is undesirable due to toxicity concerns, and result in unfavorable ratios of di-complex to mono-complex and free boric acid, limiting their biological effectiveness.
Innovation Solution
A method involving a molar ratio of fructose to boric acid between 1.8:1 and 2.4:1, reacting at a preparative scale of at least 1000 ml, and neutralizing with an alkaline or earth alkaline metal hydroxide to achieve a di-complex to boric acid ratio of at least 10:1, thereby increasing the yield of di-complex calcium fructoborate with low residual boric acid content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional synthesis methods are used, then calcium fructoborate can be produced, but the yield is low and residual boric acid content is high
Solution Approach 1:
The patent applies parameter changes by optimizing the molar ratio of fructose to boric acid (1.8:1 to 2.4:1), controlling reaction temperature (60-80°C), adjusting pH levels during neutralization, and specifying reaction time (1-3 hours). These parameter optimizations simultaneously increase di-complex yield and reduce residual boric acid content to below 10 wt%, resolving the contradiction between productivity and harmful residual content.
2Manufacturing precision
If conventional synthesis methods are used, then calcium fructoborate can be produced, but the ratio of di-complex to mono-complex is unfavorable
Solution Approach 1:
The patent uses parameter changes to achieve both high manufacturing precision and productivity. By controlling the molar ratio of fructose to boric acid within 1.8:1 to 2.4:1, maintaining reaction temperature at 60-80°C, and adjusting pH to 6.5-7.5 during neutralization, the process achieves a di-complex to mono-complex ratio of at least 10:1 while maintaining high overall yield through optimized reaction conditions.
3Manufacturing precision
If conventional synthesis methods are used, then calcium fructoborate can be produced, but the di-complex to boric acid ratio is low
Solution Approach 1:
The patent achieves a di-complex to boric acid ratio of at least 10:1 through parameter optimization including molar ratio control (1.8:1 to 2.4:1), temperature control (60-80°C), and pH adjustment (6.5-7.5). This simultaneously improves manufacturing precision by ensuring the desired complex formation while reducing toxic boric acid residues to below 10 wt%, addressing both the ratio requirement and safety concerns.
4Device complexity
If small scale synthesis is used, then reaction complexity can be managed, but the process is not suitable for preparative production
Solution Approach 1:
The patent applies segmentation by dividing the synthesis process into distinct controlled stages: (1) mixing fructose and boric acid in specific molar ratios, (2) heating at controlled temperatures for specific durations, (3) neutralization in stages with pH monitoring, and (4) filtration and concentration. This segmentation allows the process to be scaled from small to preparative volumes (at least 1000 ml) while maintaining manageable complexity through standardized procedural steps.
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 increases the yield of di-complex calcium fructoborate, reduces unreacted boric acid to less than 10 wt%, and achieves a desirable di-complex to mono-complex ratio, enhancing the biological relevance and safety of the product.
Implementation Method 1
the boric acid molecule forms diester complex bonds with two hydroxyl groups of a sugar molecule
Implementation Method 2
neutralizing the reaction with at least one of an alkaline metal hydroxide, an earth alkaline metal hydroxide, an alkaline metal carbonate, and an earth alkaline metal carbonate to provide a cation to form a salt of the fructose complexes
Implementation Method 3
drying the liquid composition to generate a dry product comprising fructoborate dicomplexes and borate
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3A~3B
AI summary
The present invention relates to a method of increasing di-complex content in a preparative reaction wherein the fructoborate complexes are a mixture of di-complexes and mono complexes, the method comprising: selecting a molar ratio between a fructose and boric acid of about 2:1; contacting the fructose and boric acid in an aqueous solution at the molar ratio to generate a liquid intermediate comprising fructoborate di-complexes and borate; and removing water from the liquid intermediate to generate a dry product comprising fructoborate di-complexes and borate, wherein the ratio of sodium fructoborate di-complexes to borate in the dry product is increased by at least about 13% relative to the ratio of sodium fructoborate di-complexes to borate in the liquid intermediate.