Curcumin Oral Care Stabilization via Zinc Ions
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Solution Overview
Problem
Curcumin compounds in oral care compositions degrade and discolor upon storage, especially at elevated temperatures, posing challenges for their effectiveness and aesthetic appeal.
Innovation Solution
Incorporating a source of zinc ions, specifically a mixture of tetrahydrocurcumin, tetrahydrodemethoxycurcumin, and tetrahydrobis-demethoxycurcumin, along with zinc salts like zinc citrate, into the oral care composition to stabilize and suppress degradation and discoloration, combined with additional antioxidant compounds such as tocopherols, alkyl esters of gallic acid, and ascorbic acid derivatives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If curcumin compounds are incorporated into oral care compositions, then beneficial physiological effects such as prevention or amelioration of gingivitis or periodontitis are achieved, but degradation and unattractive discoloration occur on storage especially at elevated temperatures
Solution Approach 1:
The patent uses antioxidants (such as tocopherols, ascorbic acid, and other phenolic compounds) as intermediary substances that protect curcumin compounds from oxidation and degradation during storage. These antioxidants act as mediators between the curcumin and environmental factors (oxygen, light, heat), preventing harmful reactions while preserving the therapeutic benefits of curcumin.
Solution Approach 2:
The patent modifies storage conditions and formulation parameters to enhance curcumin stability. This includes controlling pH levels, using specific solvents and co-solvents, adjusting temperature and light exposure conditions, and incorporating chelating agents that bind metal ions which could catalyze degradation. These parameter changes create an environment where curcumin remains stable while retaining its physiological effectiveness.
2Reliability
If curcumin compounds are incorporated into oral care compositions, then anti-inflammatory effects on tissues of the oral cavity are improved, but unattractive discoloration occurs on storage
Solution Approach 1:
The patent employs antioxidants and chelating agents as intermediary substances that prevent the discoloration of curcumin compounds during storage and manufacturing. These intermediaries protect the curcumin's natural color while preserving its anti-inflammatory properties, allowing the composition to maintain both aesthetic quality and therapeutic effectiveness.
Solution Approach 2:
The patent adjusts formulation parameters such as pH, solvent composition, and concentration levels to prevent curcumin discoloration. By optimizing these parameters, the curcumin maintains its characteristic color and aesthetic appeal while retaining its anti-inflammatory effectiveness throughout the product's shelf life.
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 zinc ions and antioxidants significantly reduces curcumin degradation and discoloration, maintaining the composition's effectiveness and aesthetic quality during storage, as demonstrated by higher recovery rates of tetrahydrocurcuminoids after storage at elevated temperatures.
Implementation Method 1
incorporating a source of zinc ions into the composition
Implementation Method 2
additional antioxidant compounds such as tocopherols, alkyl esters of gallic acid, and ascorbic acid derivatives
Data Source
AI summary
The invention provides an oral care composition (preferably a dentifrice) comprising one or more curcumin compounds and a source of zinc ions. The incorporation of a source of zinc ions into the composition suppresses the degradation and/or discoloration of the curcumin compound(s) in the composition.