Enzymatic Oil Modification for PUFA Concentration
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Solution Overview
Problem
Current methods for purifying and concentrating polyunsaturated fatty acids (PUFAs) from marine, microbial, and algal oils are inefficient, as they often require additional steps like converting triglycerides to ethyl esters, which are not as bioavailable and can reintroduce undesirable fatty acids during re-esterification.
Innovation Solution
A process involving hydrolysis using a lipase enzyme to remove saturated and short-chain fatty acids from glycerides, followed by esterification with PUFAs, such as EPA and DHA, to create a higher concentration of polyunsaturated fatty acids in triglyceride form, allowing for the reuse of enzymes and avoiding the need for ethyl ester conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional purification methods (fractionation, molecular distillation) are used to concentrate PUFAs, then PUFA concentration is improved, but additional processing steps are required and bioavailability is reduced
Solution Approach 1:
The patent applies selective extraction by using lipase enzymes to specifically hydrolyze and remove saturated fatty acids from the triglyceride mixture, leaving PUFAs intact. This selective removal concentrates PUFAs without requiring multiple processing steps or conversion to ethyl esters, thus improving PUFA concentration while maintaining bioavailability and reducing process complexity
Solution Approach 2:
The patent changes the chemical parameter of the oil composition by controlling the enzymatic hydrolysis reaction conditions (enzyme type, temperature, pH, reaction time) to achieve selective removal of saturated fatty acids. This parameter control allows concentration of PUFAs in triglyceride form without additional processing steps, resolving the contradiction between concentration improvement and process simplification
2Manufacturing precision
If ethyl ester conversion is used to purify PUFAs, then separation is improved, but bioavailability deteriorates and re-esterification introduces undesirable fatty acids
Solution Approach 1:
The patent converts the harmful effect of saturated fatty acids present in the oil into a beneficial separation mechanism. By using lipase enzymes that specifically target and hydrolyze saturated fatty acids, the patent transforms the unwanted component into removable free fatty acids, achieving purification while keeping PUFAs in their beneficial triglyceride form, thus maintaining bioavailability without requiring ethyl ester conversion
Solution Approach 2:
The patent introduces lipase enzymes as intermediary agents that mediate the selective separation of saturated fatty acids from PUFAs. These enzymes act as biocatalysts that recognize and hydrolyze only saturated fatty acid ester bonds, enabling precise separation without chemical conversion to ethyl esters, thereby maintaining PUFA bioavailability while achieving effective purification
3Manufacturing precision
If multiple purification steps are used to remove undesirable fatty acids, then purity is improved, but productivity deteriorates
Solution Approach 1:
The patent merges the purification and concentration functions into a single enzymatic hydrolysis step. The lipase enzyme simultaneously removes saturated fatty acids and concentrates PUFAs in the remaining triglyceride fraction, achieving both purification and concentration in one operation rather than requiring multiple sequential steps, thus improving productivity while maintaining high purity
Solution Approach 2:
The patent enables continuous purification by using lipase enzymes that can operate continuously under controlled conditions. The enzymatic reaction can be maintained in a continuous flow system where oil enters, undergoes selective hydrolysis, and purified product exits continuously, eliminating the need for batch processing and multiple discrete steps, thereby improving production efficiency while achieving high purity
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 effectively increases the concentration of PUFAs in oils, improves bioavailability, and reduces the need for additional processing steps, resulting in a more efficient and cost-effective production of PUFA-rich triglycerides.
Implementation Method 1
hydrolysis using a lipase enzyme to remove saturated and short-chain fatty acids from glycerides
Implementation Method 2
hydrolysis using a lipase enzyme
Implementation Method 3
esterification with PUFAs, such as EPA and DHA, to create a higher concentration of polyunsaturated fatty acids in triglyceride form
Data Source
AI summary
The disclosed subject matter relates generally to a method for modifying oil, and specifically to a process for increasing the concentration of polyunsaturated fatty acid in an oil composition. The process comprises a) hydrolysis of the glyceride by Thermomyces lanuginosus lipase, b) separation of the free saturated fatty acids from the glycerides and c) enzymatic esterification of the hydrolyzed glyceride by Candida antarctica lipase B with a polyunsaturated fatty acid.