Chlorogenic Acid Extraction from Coffee Beans
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Solution Overview
Problem
Existing methods for producing chlorogenic acid-containing compositions are complex and do not effectively prevent turbidity when the concentration of chlorogenic acid is diluted, particularly in acidic beverages.
Innovation Solution
Using specific properties of coffee beans, such as green, decaffeinated, or roasted coffee beans with certain L values, and subjecting them to column extraction with an aqueous solvent to produce a chlorogenic acid-containing composition that minimizes turbidity even at optimal concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional extraction methods are used to produce chlorogenic acid-containing compositions, then the production process becomes complex involving multiple steps including adsorbent contact, precipitation, and solid-liquid separation, but the method still fails to effectively prevent turbidity when the concentration is diluted to optimal beverage levels
Solution Approach 1:
The invention extracts and removes specific interfering substances (caffeine and other precipitable compounds) from the chlorogenic acid-containing composition through selective adsorption using activated carbon or silica gel. This extraction of harmful components prevents turbidity formation upon dilution while maintaining a relatively simple production process
Solution Approach 2:
The invention controls the concentration range of chlorogenic acid (0.03-5% w/v) and pH (2-7) to specific parameters that prevent turbidity formation upon dilution. By optimizing these physical-chemical parameters, the composition maintains clarity at beverage-strength concentrations without requiring complex multi-step processing
2Quantity of substance
If the concentration of chlorogenic acid is increased to ensure effective content in beverages, then the bioactive function is improved, but turbidity occurs particularly in acidic regions
Solution Approach 1:
The invention utilizes the precipitable compounds (caffeine and other substances) that normally cause turbidity as indicators for selective removal. By adding activated carbon or silica gel, these harmful precipitable substances are adsorbed and removed, converting the turbidity problem into a benefit where the composition becomes stable and clear upon dilution
Solution Approach 2:
The invention optimizes the concentration of chlorogenic acid within specific ranges (0.03-5% w/v) and controls pH (2-7) to prevent turbidity formation. These parameter optimizations allow high effective concentrations to be maintained without the harmful turbidity effect, especially in acidic beverage conditions
3Manufacturing precision
If multiple processing steps are implemented to reduce impurities such as caffeine, then the purity of chlorogenic acid is improved, but the production complexity and time increase
Solution Approach 1:
The invention employs selective adsorption using activated carbon or silica gel to extract and remove caffeine and other impurities from the chlorogenic acid-containing composition. This single extraction step achieves effective purification without requiring multiple sequential processing steps, thereby reducing production time while maintaining high purity
Solution Approach 2:
The invention discards the adsorbed impurities (caffeine and other precipitable substances) that are removed by activated carbon or silica gel, while recovering and retaining the chlorogenic acid in the filtrate. This selective discarding and recovering approach achieves purification efficiently in one operation rather than through multiple time-consuming 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
A simple method to produce a chlorogenic acid-containing composition with high yield and low turbidity, suitable for acidic beverages, ensuring the aesthetic quality and effective recovery of chlorogenic acid.
Implementation Method 1
subjecting the coffee beans to column extraction with an aqueous solvent
Data Source
AI summary
Provided is a method of producing a chlorogenic acid-containing composition, including a step of subjecting coffee beans to column extraction using an aqueous solvent, in which the coffee beans include at least one selected from the group consisting of green coffee beans, decaffeinated green coffee beans, roasted coffee beans having an L value of 40 or more, and decaffeinated roasted coffee beans having an L value of 25 or more, and include at least one selected from the group consisting of unground coffee beans and ground coffee beans having an average particle size of 2.0 mm or more.