Microencapsulated Walnut Extract Preservative for Fat Oxidation Control
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Solution Overview
Problem
The food industry faces challenges in preserving foods containing fats, as they tend to oxidize, leading to rancidity, and existing preservatives and antioxidants, especially those of natural origin, struggle to effectively extend shelf life and maintain nutritional properties.
Innovation Solution
A microencapsulated natural preservative and antioxidant system is developed using walnut husk and leaf extracts, encapsulated with water-soluble and fat-soluble polymers, providing a modified release mechanism to maintain antioxidant and preservative properties in high-fat foods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural extracts from walnut husk and leaves are used as preservatives, then antioxidant capacity and polyphenol content are improved, but toxicity from juglone compound increases
Solution Approach 1:
The patent extracts and isolates the beneficial antioxidant compounds (polyphenols, flavonoids) from walnut husk and leaves while removing or separating the toxic juglone compound through selective extraction processes, thus retaining efficacy while eliminating harm
Solution Approach 2:
The patent applies different treatment approaches to different components of the walnut extract: the beneficial polyphenolic compounds are preserved and concentrated, while the toxic juglone is selectively removed or neutralized, creating a composition with localized quality enhancement
2Duration of action of stationary object
If conventional preservatives are used in high-fat foods, then shelf life extension is achieved, but effectiveness is reduced due to oxidation of fats
Solution Approach 1:
The patent creates a composite preservative system combining multiple natural antioxidants (polyphenols, flavonoids, tocopherols) from walnut byproducts, which work synergistically to protect against fat oxidation and extend shelf life more effectively than conventional single-agent preservatives
Solution Approach 2:
The patent converts the harmful effect of fat oxidation into a beneficial outcome by using the oxidized fat environment as a trigger for controlled release of additional antioxidants from the microcapsules, which then counteract further oxidation and extend product stability
3Duration of action of moving object
If microencapsulation with modified release is implemented, then sustained antioxidant action in high-fat foods is achieved, but device complexity increases
Solution Approach 1:
The patent modifies the release parameters of the encapsulated antioxidants by changing the polymer matrix composition and crosslinking density, enabling controlled release in response to specific triggers (pH, oxidation products) without requiring complex mechanical or electronic release mechanisms
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 system effectively inhibits microbial growth and oxidation in high-fat foods, extending shelf life and ensuring safety and nutritional quality.
Implementation Method 1
a modified release that allows food that includes fats to be preserved throughout its shelf life
Implementation Method 2
foods that contain fats, which tend to oxidize causing the phenomenon known as 'rancidity'
Data Source
Figure 1
AI summary
The invention relates to a method of obtaining a microencapsulated natural preservative and antioxidant, comprising extract of walnut leaves and husk, the preservative obtained and its use for preserving foods containing fats Where the natural preservative is specifically a hydroalcoholic extract of walnut husk and/or walnut leaves, which is microencapsulated with a water-soluble polymer (WSP), such as maltodextrin or inulin, and where the microparticle comprises channeling agents, which are fat-soluble polymers (FSP), such as soy protein isolate or capsule. These microparticles have a controlled release action of the antioxidant and preservative extract, which allows a sustained action over time.