Heat Stable Chocolate via Crystalline Seed Tempering
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Solution Overview
Problem
Chocolate products face stability issues due to the bloom effect, which affects their visual appearance and quality, especially when stored at high temperatures, and existing solutions do not adequately address the need for improved heat stability.
Innovation Solution
A heat stable chocolate composition is developed, comprising 60.0 - 99.9% triglycerides with C16 - C24 saturated fatty acids and oleic acid, combined with 0.01 - 5% sorbitan ester as an emulsifier and 0.1 - 15% crystalline seed based on SatOSat-triglycerides, which are added during a specific temperature adjustment process to enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chocolate is stored at high temperatures, then the visual appearance deteriorates due to bloom effect, but maintaining low storage temperatures increases logistics and storage costs
Solution Approach 1:
The patent applies preliminary action by adding crystalline seed during the tempering process before the chocolate is formed and packaged. This seed promotes the formation of stable beta-V crystals in advance, creating a pre-stabilized chocolate structure that resists bloom formation during subsequent high-temperature storage and transport, eliminating the need for controlled temperature conditions.
Solution Approach 2:
The patent changes the crystal structure parameters of the cocoa butter by controlling the tempering process to produce predominantly beta-V crystals with specific melting points (34-38°C). This parameter change in crystal polymorphism transforms the chocolate from a temperature-sensitive state to a heat-stable state that maintains its visual appearance even when exposed to elevated temperatures during storage.
2Reliability
If tempering process is optimized to prevent bloom, then manufacturing time and energy consumption increase, but poor tempering leads to quality defects
Solution Approach 1:
The crystalline seed is added during the tempering process to preliminarily establish the desired crystal structure. This accelerates nucleation and crystal formation, allowing the tempering process to be completed more quickly and efficiently while ensuring consistent beta-V crystal formation and bloom resistance in the final product.
Solution Approach 2:
The crystalline seed acts as an intermediary that facilitates the tempering process by providing pre-formed beta-V crystal nuclei. This mediator enables faster and more uniform crystal formation throughout the chocolate mass, improving manufacturing efficiency while ensuring consistent quality and bloom resistance without requiring extended tempering times or excessive energy input.
3Manufacturing precision
If crystalline seed is added to accelerate crystallization, then the desired crystal structure is obtained, but excessive seed may affect the sensory properties and mouthfeel
Solution Approach 1:
The patent applies partial action by adding crystalline seed at a controlled, moderate level during tempering - sufficient to accelerate and guide crystal formation toward the desired beta-V structure, but not excessive to the point of creating unwanted microstructure or affecting sensory properties. This balanced approach ensures both manufacturing precision and sensory quality.
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 combination of triglycerides, sorbitan ester, and crystalline seed significantly improves the heat stability of chocolate, preventing bloom formation and maintaining quality even at elevated temperatures, as demonstrated by enhanced resistance to surface blooming and retention of sensory properties.
Implementation Method 1
The tempering process serves the purpose of making a sufficient amount of a desired type of seed crystals, which in turn is responsible for obtaining a rather stable chocolate product less prone to changes in the crystal composition of the solid fats.
Implementation Method 2
The mixture is subjected to a tempering process in a tempering apparatus in which the chocolate is subjected to a carefully pre-programmed temperature profile. Subsequently, the chocolate is used for making the chocolate confectionary and the resulting confectionary is cooled following a predetermined cooling program.
Data Source
AI summary
A heat stable chocolate is disclosed, the heat stable chocolate comprising a fat phase, said fat phase of said heat stable chocolate comprising: 60.0 - 99.9 % by weight of triglycerides, 40.0 - 95.0 % by weight of triglycerides having C16 - C24 saturated fatty acids in the sn-1 and sn-3 positions of the triglyceride and oleic acid in the sn-2 position of the triglyceride, 0.01 - 5% by weight of an emulsifier not being lecithin, 0.1-15% by weight of crystalline seed, wherein said crystalline seed comprises SatOSat-triglycerides in an amount of 40- 99.9%, wherein Sat stands for a saturated fatty acid and O stands for oleic acid, wherein an endotherm melt peak position of said crystalline seed is about 40 degrees Celsius or higher when measured by Differential Scanning Calorimetry by heating samples of 40 +/- 4 mg of crystalline seed from 30 degrees Celsius to 65 degrees Celsius at a rate of 3 degrees Celsius per minute to produce a melting thermogram defining said endotherm melt peak position, and wherein said fat phase comprises triglycerides from non-vegetable sources. Furthermore, a method of producing a heat stable chocolate and use of a heat stable chocolate is disclosed.