Continuous Cannabinoid Chromatography and Isomerization
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Solution Overview
Problem
Current methods for isolating and purifying cannabinoids, such as Δ8-THC and Δ9-THC, from natural sources like hemp and Cannabis are inefficient and non-continuous, leading to low scalability and purity levels, which are inadequate for pharmaceutical or analytical standards.
Innovation Solution
A continuous chromatographic process involving multiple stations and columns, using gradient elution and isomerization reactions, to purify cannabidiol (CBD) into Δ8-THC and Δ9-THC, allowing for efficient separation and conversion of CBD to these tetrahydrocannabinols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional batch extraction and purification methods are used, then the process is simpler to implement, but the productivity and scalability are insufficient for pharmaceutical standards
Solution Approach 1:
The patent implements continuous extraction and continuous chromatographic purification processes, replacing traditional batch operations. The continuous extractor maintains constant flow of solvent and plant material through the system, while the chromatographic system continuously separates cannabinoids as they elute, enabling sustained high-speed production without interruption or manual intervention between batches.
Solution Approach 2:
The purification process is divided into multiple chromatographic columns operating in sequence or parallel, with each column performing a specific separation function. The process is segmented into distinct stages: extraction, filtration, chromatographic separation on multiple columns, and final purification, allowing each segment to be optimized independently while contributing to overall high productivity.
2Manufacturing precision
If multiple purification steps including distillation and chromatography are used, then the purity of cannabinoids is improved, but the loss of time and increased process complexity worsen
Solution Approach 1:
The patent performs preliminary winterization to remove waxes and fats before chromatographic separation, and uses preliminary filtration to remove plant debris. These preliminary actions prevent these substances from interfering with the chromatographic process, reducing the need for additional purification steps and minimizing total processing time while maintaining high purity.
Solution Approach 2:
The chromatographic process uses gradient elution where the solvent composition changes continuously during the separation process. This dynamic parameter change optimizes the separation of different cannabinoids based on their polarity and affinity for the stationary phase, achieving high purity in a single continuous pass rather than requiring multiple discrete purification steps.
3Productivity
If traditional batch processing is used, then the equipment simplicity is maintained, but the scalability and consistency of cannabinoid production are insufficient
Solution Approach 1:
The continuous extraction system and chromatographic purification system are designed as universal platforms that can process different types of plant material (hemp, cannabis) and produce different cannabinoid products (CBD, THC, CBC) by simply changing the raw material input and chromatographic conditions. This multi-functionality enables scalable production across multiple product lines using the same equipment infrastructure.
Solution Approach 2:
The system incorporates monitoring and control mechanisms that track the purification process in real-time, measuring parameters such as flow rate, solvent composition, and eluate concentration. This feedback enables automatic adjustment of process parameters to maintain consistent product quality and purity levels, ensuring scalability while preserving batch-to-batch consistency required for pharmaceutical standards.
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 enables the production of cannabinoids in high purity and scalability, meeting pharmaceutical standards by continuously isolating and purifying Δ8-THC and Δ9-THC through chromatographic gradient elutions and semi-continuous isomerization reactions.
Implementation Method 1
a continuous chromatographic process involving multiple stations and columns, using gradient elution
Implementation Method 2
loading the extract onto a chromatography column wherein some or substantially most of the extract material not reversibly bound to the column is removed
Implementation Method 3
isomerization reactions, to purify cannabidiol (CBD) into Δ8-THC and Δ9-THC
Implementation Method 4
conversion of cannabidiol to delta 8-tetrahydrocannabinol and delta 9-tetrahydrocannabinol
Data Source
AI summary
In alternative embodiments, provided are processes for obtaining or purifying a substantially pure Δ8tetrahydrocannabinol (Δ8THC) and/or Δ9tetrahydrocannabinol (Δ9THC) and optionally a plurality of cannabinoids or terpenes from a natural or a synthetic source, wherein the natural or the synthetic source comprises a cannabidiol (CBD) and optionally a plurality of cannabinoids or terpenes. Also provided are processes comprising the continuous isolation and purification of cannabinoids or terpenes, and further isomerization of the purified cannabidiol to Δ8tetrahydrocannabinol (Δ8THC) and Δ9tetrahydrocannabinol (Δ9THC). In alternative embodiments, provided are processes for converting Δ8-THC into Δ9-THC. In alternative embodiments, provided are processes for the industrial scale continuous isolation and purification of cannabinoids and further isomerization of the purified cannabidiol to Δ9-THC.