Curcuminoid Isolation via Ethanol Extraction and Crystallization
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Solution Overview
Problem
Conventional methods for isolating curcuminoids from turmeric rhizome are inefficient, environmentally harmful, and costly due to the use of organic solvents, requiring multiple extractions and complex processes.
Innovation Solution
A method involving extraction with a 90-100% ethanol solution at specific stirring speeds and subsequent crystallization with a second ethanol solution at controlled temperatures to obtain curcuminoids efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional organic solvents (acetone or isopropanol) are used for extraction, then curcuminoids can be extracted from turmeric rhizome, but the extraction efficiency is poor and multiple extractions are required
Solution Approach 1:
The patent changes the extraction parameter by using ethanol concentration ranging from 60% to 100% instead of conventional organic solvents like acetone or isopropanol. This parameter change improves extraction efficiency and allows curcuminoids to be obtained in a single extraction step, eliminating the need for multiple extractions and reducing time consumption.
Solution Approach 2:
The patent employs ethanol, a cheap and readily available solvent, instead of expensive organic solvents like acetone or isopropanol. Ethanol can be easily disposed of or recycled, and its use simplifies the extraction process to a single step, reducing both time and operational complexity.
2Productivity
If conventional organic solvents (acetone or isopropanol) are used for extraction, then curcuminoids can be extracted from turmeric rhizome, but the process is harmful to environment and human health
Solution Approach 1:
The patent converts the potentially harmful conventional organic solvents into a beneficial ethanol-based system. Ethanol is environmentally friendly, non-toxic, and safe for human health, while still achieving high curcuminoid extraction efficiency. This replaces harmful substances with a benign alternative that maintains or improves productivity.
Solution Approach 2:
The patent uses ethanol, a safe and environmentally benign solvent, instead of harmful organic solvents. Ethanol can be easily degraded in the environment and is non-toxic to humans, thus eliminating environmental and health hazards while maintaining effective curcuminoid extraction.
3Productivity
If multiple extractions or ultrasonic extraction and supercritical fluid extraction are used to improve curcuminoid yield, then extraction efficiency increases, but the operation becomes cumbersome and time consuming
Solution Approach 1:
The patent achieves high curcuminoid yield through a single extraction step by optimizing the ethanol concentration parameter (60%-100%). This eliminates the need for multiple extractions or complex techniques like ultrasonic extraction and supercritical fluid extraction, thereby simplifying the process and reducing operational complexity.
4Productivity
If multiple extractions are performed to improve curcuminoid yield, then extraction efficiency increases, but the cost increases for practical application
Solution Approach 1:
The patent optimizes the extraction process by using ethanol at concentrations of 60%-100% in a single extraction step, achieving high curcuminoid yield. This eliminates the need for multiple extractions or expensive advanced techniques, thereby reducing production costs while maintaining high productivity for practical industrial application.
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 significantly increases curcuminoid yield and purity, simplifies the process, and reduces costs compared to traditional methods, while being environmentally friendlier.
Implementation Method 1
subjecting the turmeric rhizome to extraction with a first ethanol solution having an ethanol concentration ranging from 90% to 100% at a stirring speed ranging from 100 rpm to 300 rpm so as to obtain an ethanol-extracted product
Implementation Method 2
subjecting the ethanol-extracted product to crystallization with a second ethanol solution having an ethanol concentration ranging from 90% to 100% at a temperature ranging from 2°C to 8°C and a stirring speed ranging from 40 rpm to 300 rpm so as to obtain the curcuminoids
Data Source
AI summary
A method for isolating curcuminoids from turmeric rhizome includes the steps of a) subjecting the turmeric rhizome to extraction with a first ethanol solution having an ethanol concentration ranging from 90% to 100% at a stirring speed ranging from 100 rpm to 300 rpm so as to obtain an ethanol-extracted product; and b) subjecting the ethanol-extracted product to crystallization with a second ethanol solution having an ethanol concentration ranging from 90% to 100 at a temperature ranging from 2° C. to 8° C. and a stirring speed ranging from 40 rpm to 300 rpm so as to obtain the curcuminoids.