Unfermented Cocoa Processing for Nutrient Retention
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Solution Overview
Problem
Conventional cocoa bean processing methods result in significant loss of nutritionally beneficial components like polyphenols, antioxidants, and vitamins due to fermentation and high-temperature drying/roasting, leading to bitter and astringent flavors in final cocoa products.
Innovation Solution
A method involving unfermented cocoa beans, where water is added to form a suspension, followed by wet grinding and heat treatment at 70°C or less, separating into three phases (water, fat, and solid) to process cocoa butter, powder, and aroma extracts, with separate processing to remove bitter components and retain beneficial compounds, and recombining these for conching without predrying the beans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fermentation and high-temperature drying/roasting are used, then acetic acid is removed and cocoa products are produced, but substantial amounts of polyphenols, antioxidants, and vitamins are lost
Solution Approach 1:
The patent changes the temperature parameter from conventional high-temperature processing (100-150°C) to low-temperature processing (50-70°C). This parameter change allows sufficient removal of acetic acid through extended processing time while preserving heat-sensitive nutritionally beneficial components like polyphenols, antioxidants, and vitamins
Solution Approach 2:
The patent employs periodic or extended processing at low temperatures rather than single-stage high-temperature treatment. The prolonged low-temperature treatment (50-70°C) allows gradual removal of acetic acid over time while maintaining nutritional components, effectively replacing the conventional single high-temperature step
2Loss of substance
If unfermented and unroasted beans are used, then nutritionally beneficial components are preserved, but the taste is bitter and unpalatable due to high levels of astringency
Solution Approach 1:
The patent applies low-temperature treatment (50-70°C) to unfermented beans, which modifies the chemical composition to reduce astringency and bitterness while preserving nutritionally beneficial components. This temperature parameter change enables partial degradation of bitter compounds without triggering extensive loss of heat-sensitive nutrients
3Object-affected harmful factors
If extensive heat treatment is applied to reduce bitter and astringent components, then taste quality is improved, but nutritionally beneficial components are lost
Solution Approach 1:
The patent fundamentally changes the heat treatment parameters from extensive high-temperature processing to limited low-temperature processing (50-70°C). This parameter change achieves sufficient reduction of bitter and astringent components through extended time at lower temperature, while the milder thermal conditions preserve heat-sensitive nutritionally beneficial components
4Object-affected harmful factors
If conventional roasting at 70 to 180°C is used to reduce acetic acid concentration, then sour and bitter flavors are avoided, but desirable healthy cocoa ingredients are reduced
Solution Approach 1:
The patent changes the temperature parameter from conventional roasting (70-180°C) to low-temperature treatment (50-70°C). This parameter change requires extended processing time but achieves effective removal of acetic acid while the lower temperature preserves desirable healthy cocoa ingredients that would otherwise be degraded by conventional roasting
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 preserves high amounts of nutritionally beneficial components, reducing bitterness and astringency, allowing for the production of cocoa products with pleasant taste and health-inducing effects while minimizing thermal load and energy expenditure.
Implementation Method 1
adding water to unfermented cocoa beans to form a suspension
Implementation Method 2
subjecting said suspension comprising wet-ground, unfermented cocoa beans to a heat treatment at a temperature of 70°C or less
Implementation Method 3
separating the suspension comprising wet-ground, unfermented cocoa beans into three phases, i.e. a water phase (heavy phase), a fat phase (light phase) and a solid phase
Data Source
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AI summary
The invention relates to a chocolate construction kit comprising cocoa butter, cocoa powder, polyphenolic powder and cocoa aroma extracts obtained by a method for processing unfermented cocoa beans, comprising the steps of: (a) adding water to said unfermented cocoa beans to form a suspension; (b) wet grinding said suspension; (c) subjecting said suspension to a heat treatment at a temperature of 70°C or less; (d) separating the suspension into a water phase (heavy phase), a fat phase (light phase) and a solid phase, said fat phase comprising cocoa butter as a major component and solids and/or water as minor components and said solid phase comprising cocoa powder and water; and (e) separately processing the three phases, which optionally comprises: separating cocoa butter from the fat phase, separating cocoa powder from the solid phase, and separating cocoa aroma and a polyphenolic powder from at least the water phase. Further disclosed are chocolate or chocolate-like products comprising high amounts of nutritionally beneficial and useful components of the cocoa fruit, such as e.g. polyphenols, antioxidants, vitamins and/or sugars, making use of the above technique and kit.