Water-Soluble Ginger Oleoresin Microcapsules via Cyclodextrin Inclusion
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Solution Overview
Problem
Existing methods for preparing ginger oleoresin microcapsule powder face challenges such as low gingerol content, high spiciness, poor water solubility, and instability in low pH environments, often relying on chemical surfactants and solvents that raise food safety concerns.
Innovation Solution
A method is developed to create water-soluble ginger oleoresin microcapsules using food-grade raw materials and auxiliary materials, employing molecular coating, emulsification, homogenization, and microcapsule drying techniques without chemical surfactants or solvents. This method involves mixing cyclodextrin with ginger oleoresin under high shear, combining with wall materials and flavonoids, and then high-pressure homogenization followed by drying to produce microcapsules with high gingerol content and improved solubility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical surfactants and solvents are used in the preparation process, then the water solubility and stability of ginger oleoresin microcapsules are improved, but food safety concerns arise
Solution Approach 1:
The patent uses food-grade wall materials (starch, protein, polysaccharides) as intermediaries to encapsulate ginger oleoresin, replacing chemical surfactants. These natural wall materials form a protective matrix that improves water solubility and stability while maintaining food safety, directly resolving the contradiction between efficacy and safety.
Solution Approach 2:
The patent changes the chemical composition parameters of the encapsulation system by substituting synthetic surfactants with natural food-grade materials. This parameter change maintains or improves the functional properties (solubility, stability) while eliminating the harmful aspects associated with chemical surfactants.
2Ease of manufacture
If conventional extraction and drying methods are used, then the preparation process is simple, but the gingerol content is low and spiciness is high
Solution Approach 1:
The patent employs a multi-layer encapsulation structure where ginger oleoresin is nested within a food-grade wall material matrix. This nested structure protects and concentrates the active gingerol components, improving the effective gingerol content in the final product while maintaining process simplicity through integrated encapsulation and drying steps.
Solution Approach 2:
The patent creates a composite material system combining ginger oleoresin with food-grade wall materials (starch, protein, polysaccharides). This composite approach enhances the gingerol content and reduces spiciness by selectively encapsulating active components while simplifying the overall preparation process through material synergy.
3Quantity of substance
If ginger oleoresin is used directly, then the strong ginger aroma and antioxidant properties are present, but water solubility is poor
Solution Approach 1:
The patent uses food-grade wall materials to form flexible encapsulation shells around ginger oleoresin droplets. These thin film structures improve water solubility by creating a hydrophilic interface while protecting and preserving the ginger aroma and antioxidant properties of the core oleoresin material.
Solution Approach 2:
The patent creates a composite material system where hydrophobic ginger oleoresin is combined with hydrophilic food-grade wall materials. This composite structure resolves the solubility issue by providing a water-compatible outer layer while maintaining the aromatic and antioxidant properties of the inner ginger oleoresin core.
4Ease of manufacture
If conventional microcapsule preparation methods are used, then the process is established, but stability in low pH environments is insufficient
Solution Approach 1:
The patent modifies the chemical composition parameters of the wall materials by selecting food-grade materials with enhanced acid resistance (starch, protein, polysaccharides). This parameter change maintains process simplicity while significantly improving stability in low pH environments through the inherent acid-resistant properties of these natural materials.
Solution Approach 2:
The patent employs a composite wall material system with acid-resistant natural polymers that form a protective barrier against low pH environments. This composite approach maintains ease of manufacture using established encapsulation processes while achieving superior acid stability through the synergistic properties of the selected food-grade materials.
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 resulting water-soluble ginger oleoresin microcapsules exhibit high gingerol content, reduced spiciness, excellent water solubility, and stability in low pH environments, meeting the requirements for use in beverages, oral liquids, and other food products while ensuring safety and quality.
Implementation Method 1
Mix cyclodextrin with water and heat until fully dissolved to obtain a cyclodextrin solution. Then, add ginger oleoresin under high shear conditions to emulsify and disperse, forming a ginger oleoresin-cyclodextrin dispersion
Implementation Method 2
Mix cyclodextrin with water and heat until fully dissolved to obtain a cyclodextrin solution. Then, add ginger oleoresin under high shear conditions to emulsify and disperse, forming a ginger oleoresin-cyclodextrin dispersion
Implementation Method 3
Add the ginger oleoresin-cyclodextrin dispersion obtained in step (1) to the wall material solution from step (2) under high shear conditions to emulsify and disperse, adjusting the system pH to 6.5-10.0. Then, add flavonoids and continue emulsifying and dispersing to obtain a ginger oleoresin emulsion. Finally, high-pressure homogenize the ginger oleoresin emulsion to obtain a ginger oleoresin homogenate.
Implementation Method 4
Allow the ginger oleoresin homogenate obtained in step (3) to stand at a constant temperature, and then dry it to obtain water-soluble ginger oleoresin microcapsules.
Data Source
AI summary
The invention pertains to the technical field of natural product microencapsulation, specifically focusing on a water-soluble ginger oleoresin microcapsule, along with its preparation method and applications. This invention utilizes modified starch, plant polysaccharides, and similar materials as wall materials, with ginger oleoresin serving as the core material. The ginger oleoresin microcapsules are produced through processes including molecular coating, emulsification, high-pressure homogenization, constant temperature standing, and drying. The resulting product is characterized by a high gingerol content, excellent water solubility, low spiciness in solution, and strong stability in acidic environments. It fulfills the requirements of high stability, no precipitation, low spiciness, and a pleasant thermal sensation in low pH environments, making it suitable for use in food, beverages, health foods, medicines, cosmetics, and other applications.