Cannabinoid Quantification via Colorimetric Test Strips
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for quantifying cannabinoids in Cannabis samples, such as gas chromatography, are expensive, time-consuming, and complex for untrained users, and existing home-based tests have limited resolution and are difficult to perform accurately.
Innovation Solution
A method using cannabinoid-sensitive visualization reagents, such as diazonium salts and strong bases, which react with cannabinoids to produce a color change, allowing for quantification by comparing the color change to a calibrated reference chart, either in solution or on test strips, enabling accurate and simplified THC, CBD, and CBN concentration determination in both liquid and solid samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gas chromatography is used for cannabinoid quantification, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical laboratory equipment (gas chromatography systems) with a chemical reaction-based colorimetric test strip system. The test strip uses diazonium salts that react with cannabinoids to produce visible color changes, eliminating the need for expensive and complex chromatographic instrumentation while maintaining quantification capability through visual or instrumental color comparison.
Solution Approach 2:
The invention employs disposable test strips impregnated with visualization reagents instead of expensive, reusable laboratory equipment. Each test strip is a single-use component that provides accurate cannabinoid quantification without requiring maintenance, calibration, or expensive infrastructure, making the technology accessible for home and field use.
2Measurement precision
If gas chromatography is used for cannabinoid quantification, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent accelerates the analysis process by using rapid colorimetric reactions instead of slow chromatographic separation. The test strip method produces visible results within minutes through direct chemical reaction between diazonium salts and cannabinoids, skipping the time-consuming sample preparation, injection, separation, and detection steps required by gas chromatography.
Solution Approach 2:
The test strips are pre-impregnated with visualization reagents (diazonium salts) during manufacturing, so that when the sample is applied, the reaction can proceed immediately without requiring on-site preparation of reagents or complex instrument setup. This preliminary preparation of reagents on the strip enables rapid analysis.
3Ease of operation
If thin-layer chromatography home tests are used, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The patent employs colorimetric reactions where diazonium salts react with cannabinoids to produce distinct color changes proportional to cannabinoid concentration. The test strip includes a reference chart with calibrated color intensities, allowing users to compare and quantify results visually. This color-based approach simplifies operation while maintaining quantification precision through standardized color comparison.
Solution Approach 2:
The invention introduces diazonium salts as chemical intermediaries that mediate between the cannabinoid analyte and the visual detection system. These reagents form colored complexes with cannabinoids, translating chemical concentration into visible color intensity that can be easily compared against reference standards, thereby bridging the gap between simple operation and precise measurement.
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 provides a cost-effective, user-friendly, and accurate method for quantifying cannabinoids, allowing for rapid determination of THC, CBD, and CBN concentrations in Cannabis samples, improving upon the limitations of existing technologies by simplifying the process and enhancing resolution.
Implementation Method 1
The at least one cannabinoid-sensitive visualization reagent reacts with cannabinoids, which can include THC, CBD, or CBN... The at least one cannabinoid-sensitive visualization reagent may include one or more diazonium salts, a Duquenois reagent, a Ghamrawy reagent, or a modified Ghamrawy reagent
Implementation Method 2
The at least one cannabinoid-sensitive visualization reagent may be impregnated in a test strip. The test strip may include a porous matrix uniformly impregnated with the at least one cannabinoid-sensitive visualization reagent
Data Source
AI summary
A method for quantification of the concentration of one or more cannabinoid compounds in a liquid sample is provided. The method involves contacting the liquid sample with at least one cannabinoid-sensitive visualization reagent, allowing the at least one cannabinoid-sensitive visualization reagent to develop for a defined amount of time; and comparing the resulting color change of the at least one cannabinoid-sensitive visualization reagent to a calibrated quantification reference chart.