Coffee Blend Production Using Segmented Roasting
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Solution Overview
Problem
Existing methods for producing coffee blends struggle to achieve high antioxidative activity, upregulation of phase II detoxifying enzymes, and prevention of disproportionate gastric acid secretion while maintaining advantageous sensorial properties, as chlorogenic acids degrade during roasting, leading to trade-offs between N-methylpyridinium cations and carboxylic acid-5-hydroxytryptamides content.
Innovation Solution
A method involving blending Coffea arabica coffee beans roasted to different degrees using drum and rotary fluidized bed roasting techniques, with spiking of green coffee beans with chlorogenic acids and trigonelline before roasting, to achieve specific concentrations of N-methylpyridinium cations and chlorogenic acids in the final blend, optimizing the ratio and reducing carboxylic acid-5-hydroxytryptamides content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coffee beans are roasted to increase N-methylpyridinium cations content, then the antioxidative activity and health benefits improve, but chlorogenic acids degrade and sensorial properties worsen
Solution Approach 1:
The coffee blend is segmented into multiple components with different roast degrees (light, medium, dark roasted coffee beans). Each segment contributes differently to the final product: dark roasted beans provide NMP, while light roasted beans preserve CGA and provide mild sensorial properties. This segmentation allows simultaneous achievement of health benefits and pleasant taste.
Solution Approach 2:
The invention changes the roast degree parameter of different coffee bean components within the blend. By controlling roast degree to produce coffee beans with different characteristics and blending them in specific ratios, the final product achieves both high NMP content (from dark roasted components) and high CGA content (from light roasted components), along with balanced sensorial properties.
2Quantity of substance
If chlorogenic acids are preserved through light and fast roasting, then antioxidative activity is maintained, but N-methylpyridinium cations content decreases
Solution Approach 1:
The invention merges coffee bean components with different roast degrees into a single blend. Light roasted coffee beans (preserving CGA) are combined with dark roasted coffee beans (providing NMP). This merging allows the final product to simultaneously contain high levels of both chlorogenic acids and N-methylpyridinium cations, achieving both antioxidative activity and phase II detoxifying enzymes upregulation.
Solution Approach 2:
The coffee blend acts as a composite material combining different coffee bean components with complementary properties. The blend comprises light roasted coffee beans (high CGA, mild taste), medium roasted coffee beans (balanced properties), and dark roasted coffee beans (high NMP, strong taste). This composite structure allows the final product to achieve properties that cannot be obtained from a single roast degree.
3Quantity of substance
If a mixture of light and dark roasted coffee beans is produced, then both CGA and NMP can be present, but sensorial properties become unbalanced and bitter
Solution Approach 1:
The invention applies local quality by assigning different functional roles to different components of the coffee blend. Light roasted coffee beans (60-80% of blend) provide mild sensorial properties and CGA, while dark roasted coffee beans (20-40% of blend) provide NMP and aromatic compounds. This localized functional assignment ensures that the dominant light roasted component maintains pleasant taste, while the dark roasted component contributes health benefits without overwhelming the sensorial profile.
Solution Approach 2:
The invention optimizes the roast degree parameter and blending ratio parameter to achieve balanced sensorial properties. By controlling the roast degree of different components and their respective proportions in the blend, the final product achieves a harmonious balance between health beneficial compounds and pleasant taste characteristics.
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 produces a coffee blend with high antioxidative activity, mild sensorial properties, and reduced gastric acid secretion, enhancing the health benefits and taste of the coffee drink by maintaining higher levels of chlorogenic acids and N-methylpyridinium cations while minimizing unwanted compounds.
Implementation Method 1
Trigonelline which is the second important alkaloid in green coffee after caffeine, is also strongly degraded during roasting. The resulting degradation products include, among others, substances that can be important for the aroma of the resulting coffee drink, the above NMP
Implementation Method 2
providing coffee beans of Coffea arabica that have been roasted by rotary fluidized bed (RFB) roasting for at most 5 minutes at 240°C to 270°C to a medium degree of about 75 to about 90 scale parts
Implementation Method 3
blending at least two components, wherein one blend component consists of coffee beans according to (a) and one blend component consists of coffee beans according to (b)
Data Source
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AI summary
The present invention relates to a method for producing a coffee blend and the coffee blend obtained by this method, wherein the coffee blend is characterized in that a coffee drink brewed from said coffee blend contains high amounts of chlorogenic acids (CGA) and N-methylpyridinium cations (NMP) and optionally, low amounts of carboxylic acid-5-hydroxytryptamides (C5-HT), has a superior antioxidative activity.