Diglyceride Production via Lipase Catalysis and Water Control
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Solution Overview
Problem
Current methods for producing diglycerides with high purity are costly and inefficient, often requiring expensive purified fatty acids and specialized equipment, and result in low purity due to the formation of triglycerides and other by-products.
Innovation Solution
A method involving the combination of polyunsaturated fatty acid ethyl esters or free fatty acids, lipase B derived from Candida antarctica, and glycerol in water, with controlled reaction conditions such as temperature, pressure, and water addition, to produce diglycerides with high purity by minimizing the formation of triglycerides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods use purified fatty acids and specialized equipment to produce diglycerides, then manufacturing precision is improved, but device complexity and production cost increase
Solution Approach 1:
The patent uses free fatty acids and crude oil as inexpensive, readily available starting materials instead of expensive purified fatty acids. The process accepts impure inputs and achieves high purity output through the reaction methodology and selective separation, eliminating the need for specialized purification equipment while maintaining product quality
Solution Approach 2:
The patent employs specific reaction parameters including controlled temperature ranges (30-90°C), specific pH conditions (6.5-7.5), and controlled water activity (0.6-0.8) to optimize the lipase-catalyzed reaction. These parameter optimizations enable high diglyceride purity using simple, conventional equipment rather than specialized apparatus
2Productivity
If conventional methods use standard lipase reactions to produce diglycerides, then productivity is improved, but manufacturing precision deteriorates due to triglyceride formation
Solution Approach 1:
The patent uses an excess of free fatty acids relative to glycerol in the reaction mixture, which drives the equilibrium toward diglyceride formation while limiting triglyceride production. This controlled excess ensures high diglyceride yield and purity by preventing complete esterification that would form unwanted triglycerides
Solution Approach 2:
The patent implements controlled water activity (0.6-0.8) and pH (6.5-7.5) monitoring during the reaction to maintain optimal conditions for diglyceride formation. These feedback-controlled parameters prevent side reactions and ensure consistent high purity output while maintaining efficient reaction rates
3Manufacturing precision
If conventional methods use expensive purified fatty acids as raw materials, then manufacturing precision is improved, but production cost increases
Solution Approach 1:
The patent uses free fatty acids and crude oil as inexpensive, readily available starting materials instead of expensive purified fatty acids. The process accepts impure inputs and achieves high purity output through the reaction methodology and selective separation, eliminating the need for expensive purified raw materials while maintaining product quality
Solution Approach 2:
The patent converts the presence of impurities in crude oil and free fatty acids into an advantage by using selective lipase catalysis and controlled reaction conditions that favor diglyceride formation. The impure starting materials are transformed into high purity diglycerides through the selective enzymatic reaction and controlled water activity, turning a potential disadvantage into a cost advantage
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 achieves high-purity diglycerides with reduced triglyceride formation, utilizing cost-effective reactants and equipment, and allows for efficient separation of by-products, resulting in a more economical and effective production process.
Implementation Method 1
combining marine oil ethyl esters, free fatty acids, and combinations thereof, lipase, and alcohol in water to produce diglycerides
Data Source
AI summary
A method for producing diglycerides is provided. The method includes combining (i) an oil comprising at least one polyunsaturated fatty acid in the form of ethyl esters, free fatty acids, and/or combinations thereof, (ii) lipase, and (iii) glycerol in water to produce diglycerides with a high level of purity. Highly pure diglycerides obtained according to the method are also provided.