Polyunsaturated Fat Flavor Stability via Imine Formation
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Solution Overview
Problem
Conventional methods for suppressing off-flavors in polyunsaturated fatty acid-containing fats or oils are not entirely satisfactory, particularly during long-term storage, leading to the desire for improved flavor enhancement and oxidation stability.
Innovation Solution
Incorporating a basic peptide or basic amino acid into the polyunsaturated fatty acid-containing fat or oil, combined with an emulsifying agent, to form an imine compound that reduces volatile off-flavor components, thereby enhancing flavor stability over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyunsaturated fatty acids are added to process foods, then physiological activity benefits are achieved, but off-flavor develops over time due to oxidation
Solution Approach 1:
A basic amino acid or basic peptide acts as an intermediary substance that reacts with volatile off-flavor components (aldehydes, ketones, esters) to form imine compounds. This mediator approach allows the polyunsaturated fatty acids to retain their physiological benefits while the basic amino acid/peptide intercepts and neutralizes the harmful oxidation byproducts, preventing off-flavor development.
Solution Approach 2:
The invention converts the harmful volatile oxidation products into beneficial non-volatile imine compounds through reaction with basic amino acids or peptides. The harmful off-flavor components are transformed into stable, non-volatile substances that do not contribute to unpleasant taste or odor, effectively turning the oxidation harm into a beneficial stabilization effect.
2Object-generated harmful factors
If conventional antioxidants or deodorants are used, then off-flavor is suppressed, but flavor stability over long-term storage remains insufficient
Solution Approach 1:
The basic amino acid or basic peptide is incorporated into the food composition in advance, before oxidation occurs. This preliminary incorporation allows the substance to be present and ready to react with volatile off-flavor components as they form during storage, providing continuous protection against off-flavor development throughout the storage period rather than requiring repeated interventions.
Solution Approach 2:
The invention changes the chemical parameter of the off-flavor components by reacting them with basic amino acids or peptides to form imine compounds. This chemical transformation alters the volatility and sensory properties of the oxidation products, converting them from harmful volatile substances into stable non-volatile compounds, thereby extending flavor stability duration.
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 use of basic peptides and emulsifying agents effectively suppresses the generation of unpleasant tastes and flavors in polyunsaturated fatty acid-containing fats or oils, maintaining flavor improvement and stability over a long period.
Implementation Method 1
Incorporating a basic peptide or basic amino acid into the polyunsaturated fatty acid-containing fat or oil, combined with an emulsifying agent, to form an imine compound that reduces volatile off-flavor components
Data Source
AI summary
A flavor improver for a polyunsaturated fatty acid-containing fat or oil, containing a basic peptide; and a polyunsaturated fatty acid-containing fat or oil composition, containing a fat or oil containing a polyunsaturated fatty acid having 18 or more carbon atoms and two more double bonds, a basic amino acid and/or a basic peptide, and an emulsifying agent. The flavor improver for a polyunsaturated fatty acid-containing fat or oil and the polyunsaturated fatty acid-containing fat or oil composition of the present invention can suppress the generation of unpleasant taste and flavor from the polyunsaturated fatty acid over a long time period.