Partial Interesterification of Low Lauric Triglycerides for Steep SFC-Profile
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Solution Overview
Problem
Current methods for producing fat compositions with a steep SFC-profile for confectionery applications are either laborious, expensive, or result in products with undesirable properties such as slow solidification, re-crystallization, and waxy mouthfeel, due to the need for complex interesterification and fractionation processes.
Innovation Solution
A process involving partial interesterification of triglyceride compositions with less than 15 wt.% lauric acid, using an interesterification catalyst to achieve a specific SFC-profile with a high SFC at 20°C and low SFC at 35°C, optimizing the balance of symmetrical and asymmetrical triglycerides for improved mouthfeel and stability, potentially followed by a simpler fractionation step if needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If palm mid fraction (PMF) is used to achieve a steep SFC-profile, then the solid fat content is high at room temperature and low at body temperature, but the solidification rate is slow and re-crystallisation risk occurs
Solution Approach 1:
The patent applies asymmetry by creating asymmetrical triglycerides (SSU type) through partial interesterification, where saturated and unsaturated fatty acids are randomly redistributed on the glycerol backbone. This asymmetrical structure prevents regular crystal packing, thereby reducing re-crystallisation risk and improving solidification rate while maintaining the desired steep SFC-profile.
Solution Approach 2:
The patent changes the chemical structure parameter of triglycerides by performing partial interesterification to convert some symmetrical SUS triglycerides into asymmetrical SSU triglycerides. This parameter change (creating structural diversity) modifies the crystallization behavior, enabling faster solidification and reduced re-crystallisation while preserving the temperature-dependent SFC characteristics.
2Reliability
If complete interesterification is performed to eliminate re-crystallisation risk, then asymmetrical triglycerides are formed, but the SFC-profile becomes flat and waxy mouthfeel occurs
Solution Approach 1:
The patent applies partial action by performing only partial interesterification (5-50% conversion) rather than complete interesterification. This partial modification creates enough asymmetrical triglycerides to reduce re-crystallisation risk while preserving sufficient symmetrical triglycerides to maintain the desired steep SFC-profile and pleasant mouthfeel, avoiding the waxy sensation associated with complete randomisation.
Solution Approach 2:
The patent precisely controls the degree of interesterification as a key parameter, targeting 5-50% conversion to achieve the optimal balance. This parameter control ensures that enough asymmetrical structures are formed to improve stability against re-crystallisation, while sufficient symmetrical structures remain to maintain the steep SFC-profile and desirable sensory properties.
3Temperature
If fractionation is applied to correct flat SFC-profile, then the desired steep profile is achieved, but the process becomes laborious and expensive
Solution Approach 1:
The patent applies preliminary action by performing partial interesterification before fractionation to pre-establish the desired SFC-profile characteristics. This preliminary modification reduces the extent of subsequent fractionation needed, simplifying the overall process and reducing equipment complexity while still achieving the target steep SFC-profile in the final product.
Solution Approach 2:
The patent uses partial interesterification as a preliminary parameter modification that changes the triglyceride structure to predispose the fat toward the desired SFC-profile. This parameter change reduces the separation workload in subsequent fractionation steps, thereby simplifying the overall process complexity and reducing equipment requirements.
4Reliability
If random interesterification is performed to create asymmetrical triglycerides, then re-crystallisation is prevented, but high amounts of high melting triglycerides cause waxy mouthfeel
Solution Approach 1:
The patent applies partial action by limiting the interesterification extent to 5-50%, creating just enough asymmetrical triglycerides to prevent re-crystallisation without generating excessive high-melting asymmetrical species that would cause waxy mouthfeel. This partial modification achieves the minimum necessary structural change for stability while avoiding over-modification that would harm sensory properties.
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 process yields a fat composition with a steep SFC-profile, enhanced stability against re-crystallization, and improved mouthfeel, while reducing the complexity and cost of production compared to existing methods.
Implementation Method 1
subjecting a triglyceride composition which contains less than 15 wt. % of lauric acid and at least 15 wt. % of SUS to a partial interesterification step in the presence of an interesterification catalyst
Implementation Method 2
The fat composition is suitable for use in food products, like confectionery products... subjecting a fat to a fractionation and/or a hydrogenation reaction
Implementation Method 3
subjecting a fat to a fractionation and/or a hydrogenation reaction
Data Source
AI summary
The present invention relates to a process for modifying a triglyceride composition wherein a triglyceride composition which contains less than 15 wt. %, preferably less than 10 wt. %, most preferably less than 5 wt. % of lauric acid, and at least 15 wt. % of SUS, is subjected to a partial interesterification step in the presence of an interesterification catalyst, until a triglyceride composition is obtained with a degree of interesterification of between 10 and 90 % and an SFC-profile which is such that - the SFC of the modified triglyceride composition at 20°C is more than 25%, preferably more than 35%, more preferably more than 45%, most preferably more than 50%, - the SFC of the modified triglyceride composition at 35°C is less than 27%, preferably less than 20%, more preferably less than 15%, and - the difference between SFC at 20°C and the SFC at 35°C is at least 25% preferably at least 30%, whereby the SFC is the SFC measured according to method IUPAC 2.150 a.