Isoprenoid Chromatography Purification for PPM-Level Impurity Removal
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Solution Overview
Problem
Existing methods struggle to achieve high purity isoprenoids required for applications such as polymerization reactions, as impurities like oxygenates remain at levels above parts per million.
Innovation Solution
A unique combination of chromatography steps and resin treatment, including pre-wetting and exposure to specific resins like aluminum oxide, is used to purify isoprenoids, achieving purities of up to 100% (w/w).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional purification methods (centrifugation, distillation) are used, then isoprenoid purity reaches 95% or above, but impurities such as oxygenates remain at levels above parts per million which is insufficient for polymerization reactions
Solution Approach 1:
The patent employs a multi-step chromatography process with varying mobile phase compositions (hexane, ethyl acetate, methanol in different ratios) and stationary phases (silica gel, aluminum oxide) to progressively remove impurities at different concentration levels, achieving purification from 95% to >99.5% isoprenoid purity
Solution Approach 2:
The purification process is divided into multiple sequential chromatography steps, each targeting specific impurity ranges (e.g., first step removes bulk impurities, second step reduces to ppm levels), allowing systematic achievement of ultra-high purity required for polymerization applications
2Manufacturing precision
If multiple chromatography steps are used to achieve high purity, then isoprenoid purity reaches parts per million levels, but the process complexity and time increase significantly
Solution Approach 1:
The patent performs preliminary concentration of isoprenoids from fermentation broth before chromatography, and uses pre-equilibrated columns with optimized mobile phases to reduce equilibration time during the multi-step purification process
Solution Approach 2:
Flow rates, solvent compositions, and column temperatures are optimized for each chromatography step to maximize purification efficiency while minimizing processing time, balancing purity achievement with process speed
3Ease of manufacture
If conventional distillation is used, then the purification process is relatively simple, but impurities remain at levels insufficient for polymerization reactions
Solution Approach 1:
The patent uses chromatography media (silica gel, aluminum oxide) as intermediary substances that selectively adsorb impurities from the isoprenoid mixture, enabling separation at the molecular level that distillation cannot achieve due to similar boiling points of isoprenoids and their impurities
Solution Approach 2:
The patent replaces the mechanical separation mechanism of distillation (based on volatility differences) with chemical adsorption mechanisms in chromatography (based on polarity and molecular interactions), enabling separation of compounds with similar physical properties
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 achieves isoprenoids with purities suitable for polymerization reactions, reducing impurities to parts per million levels, thereby enhancing their commercial applicability.
Implementation Method 1
purifying the isoprenoid from the isoprenoid composition by way of chromatography
Data Source
AI summary
The present disclosure provides compositions and methods for producing a high-purity isoprenoid from an isoprenoid composition, wherein the method includes using chromatography to reduce the impurities in the isoprenoid composition to below parts per million levels. Further provided herein are compositions containing high-purity isoprenoids.