Chocolate Fat Composition for Bloom and Viscosity Control
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Solution Overview
Problem
Chocolate products face issues with oil and fat migration, blooming, and post-tempering thickening due to differences in liquid oil content and viscosity, which affect their heat resistance and enrobing performance.
Innovation Solution
A specific composition of oil and fat for chocolate products is developed, combining a StOSt triglyceride with a low-melting-point fraction of palm oil and an OStO triglyceride, with specific ratios and content ranges to maintain low viscosity and prevent blooming and thickening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large amount of liquid oil is mixed with the oil and fat composition containing POP, POSt, StOSt, then the viscosity of chocolate dough is reduced for easier operation, but the heat resistance of chocolate deteriorates and oil and fat migration/blooming occurs
Solution Approach 1:
The invention changes the chemical composition parameters of the oil and fat by specifying precise ratios of StOSt (25-45 wt%), OStO (0.08 or more relative to StO2), and liquid oil (15-55 wt%). This parameter optimization allows the chocolate to maintain low viscosity for easy operation while preserving heat resistance and preventing blooming
Solution Approach 2:
The invention creates a composite oil and fat system combining multiple triglyceride types (StOSt, OStO, StO2) with liquid oil components. This composite structure leverages the complementary properties of each component: StOSt provides stability, OStO prevents thickening, and liquid oil maintains low viscosity, achieving both ease of operation and heat resistance
2Reliability
If an oil and fat mainly composed of a StOSt triglyceride with a high melting point is used, then the bloom resistance and heat resistance are improved, but the viscosity of chocolate dough exceeds the allowable limit after tempering
Solution Approach 1:
The invention adjusts the viscosity parameter by optimizing the liquid oil content to 15-55 wt% and controlling the OStO/StO2 ratio to be 0.08 or more. This parameter adjustment ensures the chocolate dough maintains acceptable viscosity for enrobing operations while preserving the high bloom resistance provided by the StOSt-based composition
Solution Approach 2:
The OStO triglyceride acts as an intermediary component that mediates between the high-melting-point StOSt and the liquid oil. The OStO prevents excessive thickening after tempering, allowing the StOSt to provide bloom resistance while the liquid oil maintains workability, thus enabling the system to achieve both goals simultaneously
3Stability of the object's composition
If the OStO content is increased to prevent post-tempering thickening, then the viscosity stability is improved, but the bloom resistance may deteriorate due to reduced StOSt content
Solution Approach 1:
The invention establishes a balanced parameter range where StOSt content is maintained at 25-45 wt% for bloom resistance, while OStO content is controlled to achieve an OStO/StO2 ratio of 0.08 or more. This balanced parameter setting ensures both viscosity stability and bloom resistance are achieved simultaneously without compromising either property
Data Source
AI summary
The problem of providing an oil and fat for chocolate products and a chocolate product each having oil and fat migration/blooming resistance and post-tempering thickening resistance can be solved by an oil and fat for chocolate products according to the present invention, an oil or fat for chocolate products according to the present invention which is obtained by mixing an oil and fat mainly composed of a StOSt triglyceride with a low-melting-point fraction of palm oil that serving as a liquid oil component and further contains a specific amount of an OStO component.