Packaged Beverage Catechin Stability via Beta-Cyclodextrin
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Solution Overview
Problem
High-concentration non-polymer catechins in beverages face stability issues during long-term storage and heat sterilization, and their unique color tone leads to recognizable tooth pigmentation, making it difficult to maintain external appearance and consumer acceptance.
Innovation Solution
A packaged beverage formulation containing 0.07-0.45 wt.% non-polymer catechins, 0.06-0.5 wt.% ascorbic acid or its metal salt, and non-polymer catechingallates at a specific weight ratio, with a pH of 4.5-7, and optionally 0.05-0.45 wt.% non-polymer catechins with 0.07-0.49 wt.% β-cyclodextrin, to control hue changes and tooth pigmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-polymer catechingallates are added at high concentration to enhance physiological effects, then the physiological activity is improved, but the stability in external appearance against pH variations during long-term storage or upon heat sterilization deteriorates
Solution Approach 1:
The patent introduces an intermediary substance (such as a chelating agent or stabilizing agent) that mediates between the non-polymer catechingallates and the beverage matrix. This intermediary forms complexes with the catechingallates, protecting them from pH-induced degradation and oxidation during storage and heat sterilization, thereby maintaining both physiological activity and appearance stability.
Solution Approach 2:
The patent employs parameter changes by adjusting the pH level of the beverage formulation and controlling the concentration ratios of catechingallates to other tea components. By optimizing these parameters, the beverage maintains the stability of non-polymer catechingallates while preserving their physiological effects throughout the product shelf life.
2Reliability
If non-polymer catechingallates are added at high concentration to enhance physiological effects, then the physiological activity is improved, but the pigmentation of teeth becomes readily recognizable
Solution Approach 1:
The patent uses an intermediary substance that binds to non-polymer catechingallates, forming complexes that reduce the direct contact between catechingallates and teeth. This intermediary acts as a carrier that delivers the physiological benefits while minimizing the staining effect, allowing high concentrations to be maintained without proportional increases in tooth pigmentation.
Solution Approach 2:
The patent changes the formulation parameters by adjusting the ratio of non-polymer catechingallates to other beverage components and controlling the overall catechin concentration. This parameter optimization allows the beverage to provide high physiological effects while reducing the pigmentation effect on teeth.
3Reliability
If many purification processes are used to obtain non-polymer catechingallates, then the purity and physiological effects are improved, but the production complexity and cost increase
Solution Approach 1:
The patent applies a multi-functional extraction method that simultaneously achieves purification and concentration of non-polymer catechingallates in a single integrated process. This universal approach combines multiple functions (extraction, purification, concentration) into one operation, reducing production complexity while maintaining high purity and physiological effects.
Solution Approach 2:
The patent uses parameter changes in the extraction process, such as controlling temperature, pH, and solvent composition, to optimize the simultaneous purification and concentration of non-polymer catechingallates. By carefully adjusting these parameters, the process achieves high purity without requiring multiple separate purification steps.
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 formulation maintains the beverage's appearance stability and prevents tooth pigmentation, allowing for clear packaging and enhanced consumer experience by adjusting pH and adding β-cyclodextrin.
Implementation Method 1
adding from 0.06 to 0.5 wt. % of ascorbic acid or a metal salt thereof to the beverage
Implementation Method 2
adding from 0.07 to 0.49 wt. % of β-cyclodextrin to the beverage
Data Source
AI summary
Packaged beverages contain the following ingredients: (A) from 0.07 to 0.45 wt. % of non-polymer catechins, (B) from 0.06 to 0.5 wt. % of ascorbic acid or a metal salt thereof, and (C) non-polymer catechingallates. A content weight ratio (C/A) of the non-polymer catechingallates (C) to the non-polymer catechins (A) is from 0.8 to 1.0, and the packaged beverages have a pH of from 4.5 to 7. Another type of packaged beverages contain the following ingredients: (A) from 0.05 to 0.45 wt. % of non-polymer catechins, and (D) from 0.07 to 0.49 wt. % of β-cyclodextrin. The non-polymer catechins (A) contain (C) non-polymer catechingallates at a weight ratio (C/A) of from 0.7 to 1.0 relative to the non-polymer catechins (A).